321120022100100 has 144 divisors (see below), whose sum is σ = 953085283846080. Its totient is φ = 83431982592000.

The previous prime is 321120022100081. The next prime is 321120022100239. The reversal of 321120022100100 is 1001220021123.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 321120022100100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25865785 + ... + 36211584.

Almost surely, 2^{321120022100100} is an apocalyptic number.

321120022100100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321120022100100 is an abundant number, since it is smaller than the sum of its proper divisors (631965261745980).

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

321120022100100 is a wasteful number, since it uses less digits than its factorization.

321120022100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62077830 (or 62077823 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 321120022100100 its reverse (1001220021123), we get a palindrome (322121242121223).

The spelling of 321120022100100 in words is "three hundred twenty-one trillion, one hundred twenty billion, twenty-two million, one hundred thousand, one hundred".