222331222100 has 72 divisors (see below), whose sum is σ = 519681847608. Its totient is φ = 82074009600.

The previous prime is 222331222019. The next prime is 222331222133. The reversal of 222331222100 is 1222133222.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 43109386384 + 179221835716 = 207628^2 + 423346^2 .

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 23 ways as a sum of consecutive naturals, for example, 7161812 + ... + 7192788.

It is an arithmetic number, because the mean of its divisors is an integer number (7217803439).

Almost surely, 2^222331222100 is an apocalyptic number.

222331222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222331222100 is an abundant number, since it is smaller than the sum of its proper divisors (297350625508).

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

222331222100 is a wasteful number, since it uses less digits than its factorization.

222331222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36525 (or 36518 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222331222100 its reverse (1222133222), we get a palindrome (223553355322).

The spelling of 222331222100 in words is "two hundred twenty-two billion, three hundred thirty-one million, two hundred twenty-two thousand, one hundred".