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120011220221 = 1091261987251
BaseRepresentation
bin110111111000100111…
…0011110010011111101
3102110202210021122202012
41233301032132103331
53431240333021341
6131044332541005
711445663353264
oct1576116362375
9373683248665
10120011220221
1146995229032
121b313621765
13b417615459
145b46a275db
1531c5e700eb
hex1bf139e4fd

120011220221 has 8 divisors (see below), whose sum is σ = 121123226400. Its totient is φ = 118899414000.

The previous prime is 120011220211. The next prime is 120011220229. The reversal of 120011220221 is 122022110021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120011220221 - 218 = 120010958077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120011220196 and 120011220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011220229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1331846 + ... + 1419096.

It is an arithmetic number, because the mean of its divisors is an integer number (15140403300).

Almost surely, 2120011220221 is an apocalyptic number.

It is an amenable number.

120011220221 is a deficient number, since it is larger than the sum of its proper divisors (1112006179).

120011220221 is a wasteful number, since it uses less digits than its factorization.

120011220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99979.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120011220221 its reverse (122022110021), we get a palindrome (242033330242).

The spelling of 120011220221 in words is "one hundred twenty billion, eleven million, two hundred twenty thousand, two hundred twenty-one".

Divisors: 1 109 12619 87251 1375471 9510359 1101020369 120011220221