220021312110 has 32 divisors (see below), whose sum is σ = 528121937952. Its totient is φ = 58664484480.

The previous prime is 220021312109. The next prime is 220021312139. The reversal of 220021312110 is 11213120022.

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 220021312110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262321 + ... + 713340.

It is an arithmetic number, because the mean of its divisors is an integer number (16503810561).

Almost surely, 2^220021312110 is an apocalyptic number.

220021312110 is an abundant number, since it is smaller than the sum of its proper divisors (308100625842).

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

220021312110 is a wasteful number, since it uses less digits than its factorization.

220021312110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983188.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 220021312110 its reverse (11213120022), we get a palindrome (231234432132).

The spelling of 220021312110 in words is "two hundred twenty billion, twenty-one million, three hundred twelve thousand, one hundred ten".