22012221210 has 32 divisors (see below), whose sum is σ = 60376378752. Its totient is φ = 5031364800.

The previous prime is 22012221193. The next prime is 22012221211. The reversal of 22012221210 is 1212221022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22012221210.

It is not an unprimeable number, because it can be changed into a prime (22012221211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52409841 + ... + 52410260.

It is an arithmetic number, because the mean of its divisors is an integer number (1886761836).

Almost surely, 2^22012221210 is an apocalyptic number.

22012221210 is an abundant number, since it is smaller than the sum of its proper divisors (38364157542).

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

22012221210 is a wasteful number, since it uses less digits than its factorization.

22012221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104820118.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22012221210 its reverse (1212221022), we get a palindrome (23224442232).

The spelling of 22012221210 in words is "twenty-two billion, twelve million, two hundred twenty-one thousand, two hundred ten".