12220441400 has 48 divisors (see below), whose sum is σ = 29180450040. Its totient is φ = 4756060800.

The previous prime is 12220441393. The next prime is 12220441421. The reversal of 12220441400 is 414402221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 818306 + ... + 833105.

Almost surely, 2^12220441400 is an apocalyptic number.

12220441400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220441400 is an abundant number, since it is smaller than the sum of its proper divisors (16960008640).

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

12220441400 is a wasteful number, since it uses less digits than its factorization.

12220441400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651464 (or 1651455 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12220441400 its reverse (414402221), we get a palindrome (12634843621).

The spelling of 12220441400 in words is "twelve billion, two hundred twenty million, four hundred forty-one thousand, four hundred".