21031123130200 has 48 divisors (see below), whose sum is σ = 48903063597360. Its totient is φ = 8411468208000.

The previous prime is 21031123130131. The next prime is 21031123130219. The reversal of 21031123130200 is 203132113012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4411036 + ... + 7843435.

It is an arithmetic number, because the mean of its divisors is an integer number (1018813824945).

Almost surely, 2^{21031123130200} is an apocalyptic number.

21031123130200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21031123130200 is an abundant number, since it is smaller than the sum of its proper divisors (27871940467160).

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

21031123130200 is a wasteful number, since it uses less digits than its factorization.

21031123130200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12263068 (or 12263059 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21031123130200 its reverse (203132113012), we get a palindrome (21234255243212).

The spelling of 21031123130200 in words is "twenty-one trillion, thirty-one billion, one hundred twenty-three million, one hundred thirty thousand, two hundred".