1320100232100 has 72 divisors (see below), whose sum is σ = 4113296940480. Its totient is φ = 324947748480.

The previous prime is 1320100232063. The next prime is 1320100232147. The reversal of 1320100232100 is 12320010231.

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 1320100232100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169239720 + ... + 169247519.

Almost surely, 2^{1320100232100} is an apocalyptic number.

1320100232100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320100232100 is an abundant number, since it is smaller than the sum of its proper divisors (2793196708380).

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

1320100232100 is a wasteful number, since it uses less digits than its factorization.

1320100232100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338487269 (or 338487262 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1320100232100 its reverse (12320010231), we get a palindrome (1332420242331).

The spelling of 1320100232100 in words is "one trillion, three hundred twenty billion, one hundred million, two hundred thirty-two thousand, one hundred".