22100121221212 has 12 divisors (see below), whose sum is σ = 38675595838936. Its totient is φ = 11049950981520.

The previous prime is 22100121221207. The next prime is 22100121221221. The reversal of 22100121221212 is 21212212100122.

It is a self number, because there is not a number n which added to its sum of digits gives 22100121221212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26952858 + ... + 27760705.

Almost surely, 2^{22100121221212} is an apocalyptic number.

It is an amenable number.

22100121221212 is a deficient number, since it is larger than the sum of its proper divisors (16575474617724).

22100121221212 is a wasteful number, since it uses less digits than its factorization.

22100121221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54814548 (or 54814546 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22100121221212 its reverse (21212212100122), we get a palindrome (43312333321334).

The spelling of 22100121221212 in words is "twenty-two trillion, one hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twelve".