22012121313 has 96 divisors (see below), whose sum is σ = 39764874240. Its totient is φ = 11424291840.

The previous prime is 22012121311. The next prime is 22012121317. The reversal of 22012121313 is 31312121022.

22012121313 is a `hidden beast` number, since 220 + 12 + 121 + 313 = 666.

It is not a de Polignac number, because 22012121313 - 2¹ = 22012121311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22012121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33708895 + ... + 33709547.

It is an arithmetic number, because the mean of its divisors is an integer number (414217440).

Almost surely, 2^22012121313 is an apocalyptic number.

It is an amenable number.

22012121313 is a deficient number, since it is larger than the sum of its proper divisors (17752752927).

22012121313 is a wasteful number, since it uses less digits than its factorization.

22012121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22012121313 its reverse (31312121022), we get a palindrome (53324242335).

The spelling of 22012121313 in words is "twenty-two billion, twelve million, one hundred twenty-one thousand, three hundred thirteen".