22121021013 has 64 divisors (see below), whose sum is σ = 37521211392. Its totient is φ = 11277066240.

The previous prime is 22121021003. The next prime is 22121021047. The reversal of 22121021013 is 31012012122.

It is not a de Polignac number, because 22121021013 - 2⁹ = 22121020501 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22121020983 and 22121021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9756706 + ... + 9758972.

It is an arithmetic number, because the mean of its divisors is an integer number (586268928).

Almost surely, 2^22121021013 is an apocalyptic number.

It is an amenable number.

22121021013 is a deficient number, since it is larger than the sum of its proper divisors (15400190379).

22121021013 is a wasteful number, since it uses less digits than its factorization.

22121021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22121021013 its reverse (31012012122), we get a palindrome (53133033135).

The spelling of 22121021013 in words is "twenty-two billion, one hundred twenty-one million, twenty-one thousand, thirteen".