222001111222100 has 54 divisors (see below), whose sum is σ = 560394233625870. Its totient is φ = 76114666703040.

The previous prime is 222001111222087. The next prime is 222001111222109. The reversal of 222001111222100 is 1222111100222.

It can be written as a sum of positive squares in 3 ways, for example, as 30664880857744 + 191336230364356 = 5537588^2 + 13832434^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001111222109) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22653169715 + ... + 22653179514.

Almost surely, 2^{222001111222100} is an apocalyptic number.

222001111222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222001111222100 is an abundant number, since it is smaller than the sum of its proper divisors (338393122403770).

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

222001111222100 is a wasteful number, since it uses less digits than its factorization.

222001111222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45306349257 (or 45306349243 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222001111222100 its reverse (1222111100222), we get a palindrome (223223222322322).

The spelling of 222001111222100 in words is "two hundred twenty-two trillion, one billion, one hundred eleven million, two hundred twenty-two thousand, one hundred".