21320012230 has 128 divisors (see below), whose sum is σ = 44140142592. Its totient is φ = 7344000000.

The previous prime is 21320012227. The next prime is 21320012243. The reversal of 21320012230 is 3221002312.

21320012230 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35473930 + ... + 35474530.

It is an arithmetic number, because the mean of its divisors is an integer number (344844864).

Almost surely, 2^21320012230 is an apocalyptic number.

21320012230 is an abundant number, since it is smaller than the sum of its proper divisors (22820130362).

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

21320012230 is a wasteful number, since it uses less digits than its factorization.

21320012230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21320012230 its reverse (3221002312), we get a palindrome (24541014542).

The spelling of 21320012230 in words is "twenty-one billion, three hundred twenty million, twelve thousand, two hundred thirty".