220820351188 has 24 divisors (see below), whose sum is σ = 387061053120. Its totient is φ = 110231621760.

The previous prime is 220820351153. The next prime is 220820351189. The reversal of 220820351188 is 881153028022.

It is a super-2 number, since 2×220820351188² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 220820351188.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220820351189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6660220 + ... + 6693292.

It is an arithmetic number, because the mean of its divisors is an integer number (16127543880).

Almost surely, 2^220820351188 is an apocalyptic number.

It is an amenable number.

220820351188 is a deficient number, since it is larger than the sum of its proper divisors (166240701932).

220820351188 is a wasteful number, since it uses less digits than its factorization.

220820351188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35727 (or 35725 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 220820351188 in words is "two hundred twenty billion, eight hundred twenty million, three hundred fifty-one thousand, one hundred eighty-eight".