1200102131100 has 72 divisors (see below), whose sum is σ = 3475939869360. Its totient is φ = 319691348480.

The previous prime is 1200102131099. The next prime is 1200102131117. The reversal of 1200102131100 is 11312010021.

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

It is a congruent number.

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, 1812915 + ... + 2384714.

It is an arithmetic number, because the mean of its divisors is an integer number (48276942630).

Almost surely, 2^{1200102131100} is an apocalyptic number.

1200102131100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200102131100 is an abundant number, since it is smaller than the sum of its proper divisors (2275837738260).

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

1200102131100 is a wasteful number, since it uses less digits than its factorization.

1200102131100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198599 (or 4198592 counting only the distinct ones).

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

Adding to 1200102131100 its reverse (11312010021), we get a palindrome (1211414141121).

The spelling of 1200102131100 in words is "one trillion, two hundred billion, one hundred two million, one hundred thirty-one thousand, one hundred".