120311023212 has 36 divisors (see below), whose sum is σ = 312338981136. Its totient is φ = 39019790880.

The previous prime is 120311023139. The next prime is 120311023243. The reversal of 120311023212 is 212320113021.

120311023212 is a `hidden beast` number, since 120 + 311 + 0 + 23 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45160464 + ... + 45163127.

Almost surely, 2^120311023212 is an apocalyptic number.

120311023212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120311023212 is an abundant number, since it is smaller than the sum of its proper divisors (192027957924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120311023212 is a wasteful number, since it uses less digits than its factorization.

120311023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90323638 (or 90323633 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 120311023212 its reverse (212320113021), we get a palindrome (332631136233).

The spelling of 120311023212 in words is "one hundred twenty billion, three hundred eleven million, twenty-three thousand, two hundred twelve".