220221121110 has 16 divisors (see below), whose sum is σ = 528530690736. Its totient is φ = 58725632288.

The previous prime is 220221121079. The next prime is 220221121139. The reversal of 220221121110 is 11121122022.

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 220221121110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670351989 + ... + 3670352048.

It is an arithmetic number, because the mean of its divisors is an integer number (33033168171).

Almost surely, 2^220221121110 is an apocalyptic number.

220221121110 is an abundant number, since it is smaller than the sum of its proper divisors (308309569626).

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

220221121110 is a wasteful number, since it uses less digits than its factorization.

220221121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340704047.

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

Adding to 220221121110 its reverse (11121122022), we get a palindrome (231342243132).

The spelling of 220221121110 in words is "two hundred twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred ten".