120311100123312 has 80 divisors (see below), whose sum is σ = 355336593708800. Its totient is φ = 34361787776256.

The previous prime is 120311100123311. The next prime is 120311100123427. The reversal of 120311100123312 is 213321001113021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (120311100123311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65827687 + ... + 67630662.

It is an arithmetic number, because the mean of its divisors is an integer number (4441707421360).

Almost surely, 2^{120311100123312} is an apocalyptic number.

120311100123312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120311100123312 is an abundant number, since it is smaller than the sum of its proper divisors (235025493585488).

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

120311100123312 is a wasteful number, since it uses less digits than its factorization.

120311100123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133461050 (or 133461044 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 120311100123312 its reverse (213321001113021), we get a palindrome (333632101236333).

The spelling of 120311100123312 in words is "one hundred twenty trillion, three hundred eleven billion, one hundred million, one hundred twenty-three thousand, three hundred twelve".