21303130223130 has 64 divisors (see below), whose sum is σ = 58438741413888. Its totient is φ = 4868678698560.

The previous prime is 21303130223033. The next prime is 21303130223147. The reversal of 21303130223130 is 3132203130312.

It is a self number, because there is not a number n which added to its sum of digits gives 21303130223130.

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, 4649202 + ... + 8013821.

It is an arithmetic number, because the mean of its divisors is an integer number (913105334592).

Almost surely, 2^{21303130223130} is an apocalyptic number.

21303130223130 is an abundant number, since it is smaller than the sum of its proper divisors (37135611190758).

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

21303130223130 is a wasteful number, since it uses less digits than its factorization.

21303130223130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12671051.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21303130223130 its reverse (3132203130312), we get a palindrome (24435333353442).

The spelling of 21303130223130 in words is "twenty-one trillion, three hundred three billion, one hundred thirty million, two hundred twenty-three thousand, one hundred thirty".