220111221210 has 64 divisors (see below), whose sum is σ = 535076513280. Its totient is φ = 57940047360.

The previous prime is 220111221167. The next prime is 220111221251. The reversal of 220111221210 is 12122111022.

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 220111221210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14499184 + ... + 14514356.

It is an arithmetic number, because the mean of its divisors is an integer number (8360570520).

Almost surely, 2^220111221210 is an apocalyptic number.

220111221210 is an abundant number, since it is smaller than the sum of its proper divisors (314965292070).

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

220111221210 is a wasteful number, since it uses less digits than its factorization.

220111221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21383.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220111221210 its reverse (12122111022), we get a palindrome (232233332232).

The spelling of 220111221210 in words is "two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred ten".