21133023230 has 64 divisors (see below), whose sum is σ = 43018324992. Its totient is φ = 7407008640.

The previous prime is 21133023227. The next prime is 21133023253. The reversal of 21133023230 is 3232033112.

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, 411227 + ... + 459753.

It is an arithmetic number, because the mean of its divisors is an integer number (672161328).

Almost surely, 2^21133023230 is an apocalyptic number.

21133023230 is an abundant number, since it is smaller than the sum of its proper divisors (21885301762).

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

21133023230 is a wasteful number, since it uses less digits than its factorization.

21133023230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48689.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21133023230 its reverse (3232033112), we get a palindrome (24365056342).

The spelling of 21133023230 in words is "twenty-one billion, one hundred thirty-three million, twenty-three thousand, two hundred thirty".