220888911720 has 32 divisors (see below), whose sum is σ = 662666735520. Its totient is φ = 58903709760.

The previous prime is 220888911709. The next prime is 220888911773. The reversal of 220888911720 is 27119888022.

It is a super-2 number, since 2×220888911720² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220888911720.

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, 920370346 + ... + 920370585.

It is an arithmetic number, because the mean of its divisors is an integer number (20708335485).

Almost surely, 2^220888911720 is an apocalyptic number.

220888911720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220888911720 is an abundant number, since it is smaller than the sum of its proper divisors (441777823800).

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

220888911720 is a wasteful number, since it uses less digits than its factorization.

220888911720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840740945 (or 1840740941 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 48.

The spelling of 220888911720 in words is "two hundred twenty billion, eight hundred eighty-eight million, nine hundred eleven thousand, seven hundred twenty".