21100131232300 has 36 divisors (see below), whose sum is σ = 47778036291216. Its totient is φ = 8073093688000.

The previous prime is 21100131232291. The next prime is 21100131232303. The reversal of 21100131232300 is 323213100112.

It is not an unprimeable number, because it can be changed into a prime (21100131232303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4586982751 + ... + 4586987350.

It is an arithmetic number, because the mean of its divisors is an integer number (1327167674756).

Almost surely, 2^{21100131232300} is an apocalyptic number.

21100131232300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21100131232300 is an abundant number, since it is smaller than the sum of its proper divisors (26677905058916).

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

21100131232300 is a wasteful number, since it uses less digits than its factorization.

21100131232300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9173970138 (or 9173970131 counting only the distinct ones).

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

Adding to 21100131232300 its reverse (323213100112), we get a palindrome (21423344332412).

The spelling of 21100131232300 in words is "twenty-one trillion, one hundred billion, one hundred thirty-one million, two hundred thirty-two thousand, three hundred".