21012224330 has 16 divisors (see below), whose sum is σ = 37880472960. Its totient is φ = 8391896592.

The previous prime is 21012224327. The next prime is 21012224347. The reversal of 21012224330 is 3342221012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1617350 + ... + 1630289.

It is an arithmetic number, because the mean of its divisors is an integer number (2367529560).

Almost surely, 2^21012224330 is an apocalyptic number.

21012224330 is a deficient number, since it is larger than the sum of its proper divisors (16868248630).

21012224330 is a wasteful number, since it uses less digits than its factorization.

21012224330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248293.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21012224330 its reverse (3342221012), we get a palindrome (24354445342).

The spelling of 21012224330 in words is "twenty-one billion, twelve million, two hundred twenty-four thousand, three hundred thirty".