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120112111213 = 166577210909
BaseRepresentation
bin110111111011100111…
…1010101111001101101
3102111000211010110011121
41233313033111321231
53431442200024323
6131102335220541
711451330046153
oct1576717257155
9374024113147
10120112111213
1146a37178a16
121b341377751
13b4324ab673
145b561ab3d3
1531cec4da5d
hex1bf73d5e6d

120112111213 has 4 divisors (see below), whose sum is σ = 120119338780. Its totient is φ = 120104883648.

The previous prime is 120112111177. The next prime is 120112111241. The reversal of 120112111213 is 312111211021.

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: 312111211021 = 2957105549953.

It can be written as a sum of positive squares in 2 ways, for example, as 62249252004 + 57862859209 = 249498^2 + 240547^2 .

It is a cyclic number.

It is not a de Polignac number, because 120112111213 - 217 = 120111980141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120112111283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3588798 + ... + 3622111.

It is an arithmetic number, because the mean of its divisors is an integer number (30029834695).

Almost surely, 2120112111213 is an apocalyptic number.

It is an amenable number.

120112111213 is a deficient number, since it is larger than the sum of its proper divisors (7227567).

120112111213 is an equidigital number, since it uses as much as digits as its factorization.

120112111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7227566.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 120112111213 its reverse (312111211021), we get a palindrome (432223322234).

The spelling of 120112111213 in words is "one hundred twenty billion, one hundred twelve million, one hundred eleven thousand, two hundred thirteen".

Divisors: 1 16657 7210909 120112111213