22021230 has 64 divisors (see below), whose sum is σ = 65899008. Its totient is φ = 4575360.

The previous prime is 22021229. The next prime is 22021249. The reversal of 22021230 is 3212022.

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, 2457 + ... + 7076.

It is an arithmetic number, because the mean of its divisors is an integer number (1029672).

Almost surely, 2^22021230 is an apocalyptic number.

22021230 is an abundant number, since it is smaller than the sum of its proper divisors (43877778).

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

22021230 is a wasteful number, since it uses less digits than its factorization.

22021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9561.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22021230 is about 4692.6783397118. The cubic root of 22021230 is about 280.2940363537.

Adding to 22021230 its reverse (3212022), we get a palindrome (25233252).

The spelling of 22021230 in words is "twenty-two million, twenty-one thousand, two hundred thirty".