21125400104310 has 32 divisors (see below), whose sum is σ = 50701569021792. Its totient is φ = 5633372386560.

The previous prime is 21125400104287. The next prime is 21125400104339. The reversal of 21125400104310 is 1340100452112.

It is a super-2 number, since 2×21125400104310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1661889 + ... + 6709148.

It is an arithmetic number, because the mean of its divisors is an integer number (1584424031931).

Almost surely, 2^{21125400104310} is an apocalyptic number.

21125400104310 is an abundant number, since it is smaller than the sum of its proper divisors (29576168917482).

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

21125400104310 is a wasteful number, since it uses less digits than its factorization.

21125400104310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8455168.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 21125400104310 its reverse (1340100452112), we get a palindrome (22465500556422).

The spelling of 21125400104310 in words is "twenty-one trillion, one hundred twenty-five billion, four hundred million, one hundred four thousand, three hundred ten".