222100111001000 has 32 divisors (see below), whose sum is σ = 519714259744680. Its totient is φ = 88840044400000.

The previous prime is 222100111000997. The next prime is 222100111001039. The reversal of 222100111001000 is 100111001222.

It can be written as a sum of positive squares in 4 ways, for example, as 37361507108836 + 184738603892164 = 6112406^2 + 13591858^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111050054501 + ... + 111050056500.

Almost surely, 2^{222100111001000} is an apocalyptic number.

222100111001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222100111001000 is an abundant number, since it is smaller than the sum of its proper divisors (297614148743680).

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

222100111001000 is a wasteful number, since it uses less digits than its factorization.

222100111001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222100111022 (or 222100111008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 222100111001000 its reverse (100111001222), we get a palindrome (222200222002222).

The spelling of 222100111001000 in words is "two hundred twenty-two trillion, one hundred billion, one hundred eleven million, one thousand".