222111101222100 has 144 divisors (see below), whose sum is σ = 716327358781440. Its totient is φ = 59040394732800.

The previous prime is 222111101222099. The next prime is 222111101222189. The reversal of 222111101222100 is 1222101111222.

222111101222100 is a `hidden beast` number, since 2 + 221 + 1 + 110 + 122 + 210 + 0 = 666.

It is a super-2 number, since 2×222111101222100² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130566036 + ... + 132256235.

Almost surely, 2^{222111101222100} is an apocalyptic number.

222111101222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222111101222100 is an abundant number, since it is smaller than the sum of its proper divisors (494216257559340).

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

222111101222100 is a wasteful number, since it uses less digits than its factorization.

222111101222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262822607 (or 262822594 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222111101222100 its reverse (1222101111222), we get a palindrome (223333202333322).

The spelling of 222111101222100 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred one million, two hundred twenty-two thousand, one hundred".