22100021212012 has 12 divisors (see below), whose sum is σ = 38798599542136. Its totient is φ = 11014707057120.

The previous prime is 22100021212007. The next prime is 22100021212057. The reversal of 22100021212012 is 21021212000122.

It is a happy 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, 8825885814 + ... + 8825888317.

Almost surely, 2^{22100021212012} is an apocalyptic number.

It is an amenable number.

22100021212012 is a deficient number, since it is larger than the sum of its proper divisors (16698578330124).

22100021212012 is a wasteful number, since it uses less digits than its factorization.

22100021212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651774448 (or 17651774446 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22100021212012 its reverse (21021212000122), we get a palindrome (43121233212134).

The spelling of 22100021212012 in words is "twenty-two trillion, one hundred billion, twenty-one million, two hundred twelve thousand, twelve".