22122012213 has 72 divisors (see below), whose sum is σ = 37680027840. Its totient is φ = 12469282560.

The previous prime is 22122012173. The next prime is 22122012281. The reversal of 22122012213 is 31221022122.

22122012213 is a `hidden beast` number, since 221 + 220 + 1 + 221 + 3 = 666.

It is not a de Polignac number, because 22122012213 - 2¹⁰ = 22122011189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122012013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10235853 + ... + 10238013.

It is an arithmetic number, because the mean of its divisors is an integer number (523333720).

Almost surely, 2^22122012213 is an apocalyptic number.

It is an amenable number.

22122012213 is a deficient number, since it is larger than the sum of its proper divisors (15558015627).

22122012213 is a wasteful number, since it uses less digits than its factorization.

22122012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487 (or 2477 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22122012213 its reverse (31221022122), we get a palindrome (53343034335).

Subtracting 22122012213 from its reverse (31221022122), we obtain a palindrome (9099009909).

The spelling of 22122012213 in words is "twenty-two billion, one hundred twenty-two million, twelve thousand, two hundred thirteen".