22131210 has 64 divisors (see below), whose sum is σ = 55987200. Its totient is φ = 5591040.

The previous prime is 22131199. The next prime is 22131211. The reversal of 22131210 is 1213122.

It is not an unprimeable number, because it can be changed into a prime (22131211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49066 + ... + 49514.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^22131210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22131210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27993600).

22131210 is an abundant number, since it is smaller than the sum of its proper divisors (33855990).

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

22131210 is a wasteful number, since it uses less digits than its factorization.

22131210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 22131210 is about 4704.3819997955. The cubic root of 22131210 is about 280.7598831903.

Adding to 22131210 its reverse (1213122), we get a palindrome (23344332).

The spelling of 22131210 in words is "twenty-two million, one hundred thirty-one thousand, two hundred ten".