21232211330 has 128 divisors (see below), whose sum is σ = 43308711936. Its totient is φ = 7429363200.

The previous prime is 21232211327. The next prime is 21232211339. The reversal of 21232211330 is 3311223212.

21232211330 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21232211339) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95211599 + ... + 95211821.

It is an arithmetic number, because the mean of its divisors is an integer number (338349312).

Almost surely, 2^21232211330 is an apocalyptic number.

21232211330 is an abundant number, since it is smaller than the sum of its proper divisors (22076500606).

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

21232211330 is a wasteful number, since it uses less digits than its factorization.

21232211330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21232211330 its reverse (3311223212), we get a palindrome (24543434542).

The spelling of 21232211330 in words is "twenty-one billion, two hundred thirty-two million, two hundred eleven thousand, three hundred thirty".