22121130212 has 12 divisors (see below), whose sum is σ = 38713518396. Its totient is φ = 11060124960.

The previous prime is 22121130169. The next prime is 22121130259. The reversal of 22121130212 is 21203112122.

It can be written as a sum of positive squares in 2 ways, for example, as 15857357476 + 6263772736 = 125926^2 + 79144^2 .

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, 20162 + ... + 211302.

It is an arithmetic number, because the mean of its divisors is an integer number (3226126533).

Almost surely, 2^22121130212 is an apocalyptic number.

It is an amenable number.

22121130212 is a deficient number, since it is larger than the sum of its proper divisors (16592388184).

22121130212 is a wasteful number, since it uses less digits than its factorization.

22121130212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220078 (or 220076 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22121130212 its reverse (21203112122), we get a palindrome (43324242334).

The spelling of 22121130212 in words is "twenty-two billion, one hundred twenty-one million, one hundred thirty thousand, two hundred twelve".