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120262103221 = 139250931017
BaseRepresentation
bin111000000000000101…
…1100001000010110101
3102111102021100211112011
41300000023201002311
53432244044300341
6131125254124221
711455131003511
oct1600013410265
9374367324464
10120262103221
1147003905157
121b383650671
13b4575a6a30
145b6c093141
1531dcecab81
hex1c002e10b5

120262103221 has 4 divisors (see below), whose sum is σ = 129513034252. Its totient is φ = 111011172192.

The previous prime is 120262103177. The next prime is 120262103251. The reversal of 120262103221 is 122301262021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122301262021 = 1049116588429.

It can be written as a sum of positive squares in 2 ways, for example, as 48845420100 + 71416683121 = 221010^2 + 267239^2 .

It is a cyclic number.

It is not a de Polignac number, because 120262103221 - 213 = 120262095029 is a prime.

It is a super-2 number, since 2×1202621032212 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120262103192 and 120262103201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120262103251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625465496 + ... + 4625465521.

It is an arithmetic number, because the mean of its divisors is an integer number (32378258563).

Almost surely, 2120262103221 is an apocalyptic number.

It is an amenable number.

120262103221 is a deficient number, since it is larger than the sum of its proper divisors (9250931031).

120262103221 is an equidigital number, since it uses as much as digits as its factorization.

120262103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250931030.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 120262103221 its reverse (122301262021), we get a palindrome (242563365242).

The spelling of 120262103221 in words is "one hundred twenty billion, two hundred sixty-two million, one hundred three thousand, two hundred twenty-one".

Divisors: 1 13 9250931017 120262103221