222044320100 has 18 divisors (see below), whose sum is σ = 481836174834. Its totient is φ = 88817728000.

The previous prime is 222044320063. The next prime is 222044320123. The reversal of 222044320100 is 1023440222.

It can be written as a sum of positive squares in 3 ways, for example, as 346480996 + 221697839104 = 18614^2 + 470848^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1110221501 + ... + 1110221700.

Almost surely, 2^222044320100 is an apocalyptic number.

222044320100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222044320100 is an abundant number, since it is smaller than the sum of its proper divisors (259791854734).

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

222044320100 is a wasteful number, since it uses less digits than its factorization.

222044320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220443215 (or 2220443208 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 222044320100 its reverse (1023440222), we get a palindrome (223067760322).

The spelling of 222044320100 in words is "two hundred twenty-two billion, forty-four million, three hundred twenty thousand, one hundred".