2222421600 has 144 divisors (see below), whose sum is σ = 8267470848. Its totient is φ = 507978240.

The previous prime is 2222421571. The next prime is 2222421661. The reversal of 2222421600 is 61242222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49344 + ... + 82943.

It is an arithmetic number, because the mean of its divisors is an integer number (57412992).

Almost surely, 2^2222421600 is an apocalyptic number.

2222421600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222421600 is an abundant number, since it is smaller than the sum of its proper divisors (6045049248).

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

2222421600 is a wasteful number, since it uses less digits than its factorization.

2222421600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132317 (or 132304 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2222421600 is about 47142.5667523524. The cubic root of 2222421600 is about 1304.9949061030.

Adding to 2222421600 its reverse (61242222), we get a palindrome (2283663822).

The spelling of 2222421600 in words is "two billion, two hundred twenty-two million, four hundred twenty-one thousand, six hundred".