22100001222222 has 80 divisors (see below), whose sum is σ = 61739685988992. Its totient is φ = 5740260054480.

The previous prime is 22100001222217. The next prime is 22100001222301. The reversal of 22100001222222 is 22222210000122.

22100001222222 is a `hidden beast` number, since 221 + 0 + 0 + 0 + 0 + 1 + 222 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22100001222195 and 22100001222204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 885830128 + ... + 885855075.

Almost surely, 2^{22100001222222} is an apocalyptic number.

22100001222222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22100001222222 is an abundant number, since it is smaller than the sum of its proper divisors (39639684766770).

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

22100001222222 is a wasteful number, since it uses less digits than its factorization.

22100001222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771685235 (or 1771685226 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22100001222222 its reverse (22222210000122), we get a palindrome (44322211222344).

The spelling of 22100001222222 in words is "twenty-two trillion, one hundred billion, one million, two hundred twenty-two thousand, two hundred twenty-two".