21010011202400 has 144 divisors (see below), whose sum is σ = 56582172727920. Its totient is φ = 7554161049600.

The previous prime is 21010011202373. The next prime is 21010011202423. The reversal of 21010011202400 is 420211001012.

It is a happy number.

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, 12629729 + ... + 14196128.

It is an arithmetic number, because the mean of its divisors is an integer number (392931755055).

Almost surely, 2^{21010011202400} is an apocalyptic number.

21010011202400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010011202400 is an abundant number, since it is smaller than the sum of its proper divisors (35572161525520).

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

21010011202400 is a wasteful number, since it uses less digits than its factorization.

21010011202400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26825977 (or 26825964 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21010011202400 its reverse (420211001012), we get a palindrome (21430222203412).

The spelling of 21010011202400 in words is "twenty-one trillion, ten billion, eleven million, two hundred two thousand, four hundred".