321110120100 has 144 divisors (see below), whose sum is σ = 1158331862016. Its totient is φ = 66724176000.

The previous prime is 321110120099. The next prime is 321110120113. The reversal of 321110120100 is 1021011123.

It is a super-2 number, since 2×321110120100² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6927336 + ... + 6973535.

It is an arithmetic number, because the mean of its divisors is an integer number (8043971264).

Almost surely, 2^321110120100 is an apocalyptic number.

321110120100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321110120100 is an abundant number, since it is smaller than the sum of its proper divisors (837221741916).

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

321110120100 is a wasteful number, since it uses less digits than its factorization.

321110120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13900906 (or 13900899 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 321110120100 its reverse (1021011123), we get a palindrome (322131131223).

The spelling of 321110120100 in words is "three hundred twenty-one billion, one hundred ten million, one hundred twenty thousand, one hundred".