2220400120 has 32 divisors (see below), whose sum is σ = 5064343920. Its totient is φ = 875992320.

The previous prime is 2220400067. The next prime is 2220400177. The reversal of 2220400120 is 210040222.

It is a self number, because there is not a number n which added to its sum of digits gives 2220400120.

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, 377286 + ... + 383125.

Almost surely, 2^2220400120 is an apocalyptic number.

2220400120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220400120 is an abundant number, since it is smaller than the sum of its proper divisors (2843943800).

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

2220400120 is a wasteful number, since it uses less digits than its factorization.

2220400120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760495 (or 760491 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2220400120 is about 47121.1218032848. The cubic root of 2220400120 is about 1304.5991184119.

Adding to 2220400120 its reverse (210040222), we get a palindrome (2430440342).

The spelling of 2220400120 in words is "two billion, two hundred twenty million, four hundred thousand, one hundred twenty".