222040212100 has 54 divisors (see below), whose sum is σ = 560492947770. Its totient is φ = 76128071040.

The previous prime is 222040212071. The next prime is 222040212197. The reversal of 222040212100 is 1212040222.

It can be written as a sum of positive squares in 3 ways, for example, as 69340582276 + 152699629824 = 263326^2 + 390768^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22652265 + ... + 22662064.

Almost surely, 2^222040212100 is an apocalyptic number.

222040212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222040212100 is an abundant number, since it is smaller than the sum of its proper divisors (338452735670).

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

222040212100 is a wasteful number, since it uses less digits than its factorization.

222040212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45314357 (or 45314343 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222040212100 its reverse (1212040222), we get a palindrome (223252252322).

The spelling of 222040212100 in words is "two hundred twenty-two billion, forty million, two hundred twelve thousand, one hundred".