21130423204310 has 64 divisors (see below), whose sum is σ = 44570549054592. Its totient is φ = 7062749531136.

The previous prime is 21130423204309. The next prime is 21130423204367. The reversal of 21130423204310 is 1340232403112.

It is a super-2 number, since 2×21130423204310² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21130423204310.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17556167 + ... + 18721106.

It is an arithmetic number, because the mean of its divisors is an integer number (696414828978).

Almost surely, 2^{21130423204310} is an apocalyptic number.

21130423204310 is an abundant number, since it is smaller than the sum of its proper divisors (23440125850282).

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

21130423204310 is a wasteful number, since it uses less digits than its factorization.

21130423204310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36277497.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21130423204310 its reverse (1340232403112), we get a palindrome (22470655607422).

The spelling of 21130423204310 in words is "twenty-one trillion, one hundred thirty billion, four hundred twenty-three million, two hundred four thousand, three hundred ten".