222010121212200 has 144 divisors (see below), whose sum is σ = 746050865430780. Its totient is φ = 59165627028480.

The previous prime is 222010121212157. The next prime is 222010121212223. The reversal of 222010121212200 is 2212121010222.

It is a happy number.

222010121212200 is a `hidden beast` number, since 2 + 220 + 10 + 1 + 21 + 212 + 200 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 96856185134916 + 125153936077284 = 9841554^2 + 11187222^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35741229 + ... + 41490428.

Almost surely, 2^{222010121212200} is an apocalyptic number.

222010121212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222010121212200 is an abundant number, since it is smaller than the sum of its proper divisors (524040744218580).

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

222010121212200 is a wasteful number, since it uses less digits than its factorization.

222010121212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77233276 (or 77233264 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222010121212200 its reverse (2212121010222), we get a palindrome (224222242222422).

The spelling of 222010121212200 in words is "two hundred twenty-two trillion, ten billion, one hundred twenty-one million, two hundred twelve thousand, two hundred".