22121003331 has 12 divisors (see below), whose sum is σ = 36517211952. Its totient is φ = 12640573296.

The previous prime is 22121003323. The next prime is 22121003353. The reversal of 22121003331 is 13330012122.

It is not a de Polignac number, because 22121003331 - 2³ = 22121003323 is a prime.

It is a super-2 number, since 2×22121003331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22121003321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175563456 + ... + 175563581.

It is an arithmetic number, because the mean of its divisors is an integer number (3043100996).

Almost surely, 2^22121003331 is an apocalyptic number.

22121003331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22121003331 is a deficient number, since it is larger than the sum of its proper divisors (14396208621).

22121003331 is a wasteful number, since it uses less digits than its factorization.

22121003331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351127050 (or 351127047 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 22121003331 its reverse (13330012122), we get a palindrome (35451015453).

The spelling of 22121003331 in words is "twenty-two billion, one hundred twenty-one million, three thousand, three hundred thirty-one".