2182421199204 has 27 divisors (see below), whose sum is σ = 5516698214937. Its totient is φ = 727470778464.

The previous prime is 2182421199193. The next prime is 2182421199239. The reversal of 2182421199204 is 4029911242812.

The square root of 2182421199204 is 1477302.

It is a perfect power (a square), and thus also a powerful number.

2182421199204 is a `hidden beast` number, since 2 + 1 + 8 + 2 + 421 + 19 + 9 + 204 = 666.

It can be written as a sum of positive squares in only one way, i.e., 163612160100 + 2018809039104 = 404490^2 + 1420848^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2182421199204.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8740704 + ... + 8986920.

Almost surely, 2^{2182421199204} is an apocalyptic number.

2182421199204 is the 1477302-nd square number.

It is an amenable number.

2182421199204 is an abundant number, since it is smaller than the sum of its proper divisors (3334277015733).

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

2182421199204 is an frugal number, since it uses more digits than its factorization.

2182421199204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492444 (or 246222 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 2182421199204 in words is "two trillion, one hundred eighty-two billion, four hundred twenty-one million, one hundred ninety-nine thousand, two hundred four".