21130402322100 has 144 divisors (see below), whose sum is σ = 61594235091648. Its totient is φ = 5592674165760.

The previous prime is 21130402322093. The next prime is 21130402322123. The reversal of 21130402322100 is 122320403112.

It is a congruent number.

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, 254655219 + ... + 254738181.

It is an arithmetic number, because the mean of its divisors is an integer number (427737743692).

Almost surely, 2^{21130402322100} is an apocalyptic number.

21130402322100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21130402322100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30797117545824).

21130402322100 is an abundant number, since it is smaller than the sum of its proper divisors (40463832769548).

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

21130402322100 is a wasteful number, since it uses less digits than its factorization.

21130402322100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89314 (or 89307 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21130402322100 its reverse (122320403112), we get a palindrome (21252722725212).

The spelling of 21130402322100 in words is "twenty-one trillion, one hundred thirty billion, four hundred two million, three hundred twenty-two thousand, one hundred".