120512210156 has 24 divisors (see below), whose sum is σ = 227150449344. Its totient is φ = 55613358720.

The previous prime is 120512210141. The next prime is 120512210173. The reversal of 120512210156 is 651012215021.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230621 + ... + 542411.

It is an arithmetic number, because the mean of its divisors is an integer number (9464602056).

Almost surely, 2^120512210156 is an apocalyptic number.

It is an amenable number.

120512210156 is a deficient number, since it is larger than the sum of its proper divisors (106638239188).

120512210156 is a wasteful number, since it uses less digits than its factorization.

120512210156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319241 (or 319239 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 120512210156 its reverse (651012215021), we get a palindrome (771524425177).

The spelling of 120512210156 in words is "one hundred twenty billion, five hundred twelve million, two hundred ten thousand, one hundred fifty-six".