21130102421304 has 128 divisors (see below), whose sum is σ = 54115955815680. Its totient is φ = 6871656960000.

The previous prime is 21130102421257. The next prime is 21130102421341. The reversal of 21130102421304 is 40312420103112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5281203304 + ... + 5281207304.

It is an arithmetic number, because the mean of its divisors is an integer number (422780904810).

Almost surely, 2^{21130102421304} is an apocalyptic number.

21130102421304 is a gapful number since it is divisible by the number (24) 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 21130102421304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27057977907840).

21130102421304 is an abundant number, since it is smaller than the sum of its proper divisors (32985853394376).

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

21130102421304 is a wasteful number, since it uses less digits than its factorization.

21130102421304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661 (or 8657 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21130102421304 its reverse (40312420103112), we get a palindrome (61442522524416).

The spelling of 21130102421304 in words is "twenty-one trillion, one hundred thirty billion, one hundred two million, four hundred twenty-one thousand, three hundred four".