22113331321 has 2 divisors, whose sum is σ = 22113331322. Its totient is φ = 22113331320.

The previous prime is 22113331319. The next prime is 22113331327. The reversal of 22113331321 is 12313331122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21626643600 + 486687721 = 147060^2 + 22061^2 .

It is a cyclic number.

It is not a de Polignac number, because 22113331321 - 2¹ = 22113331319 is a prime.

It is a super-2 number, since 2×22113331321² (a number of 21 digits) contains 22 as substring.

Together with 22113331319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22113331292 and 22113331301.

It is not a weakly prime, because it can be changed into another prime (22113331327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056665660 + 11056665661.

It is an arithmetic number, because the mean of its divisors is an integer number (11056665661).

Almost surely, 2^22113331321 is an apocalyptic number.

It is an amenable number.

22113331321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22113331321 is an equidigital number, since it uses as much as digits as its factorization.

22113331321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

Adding to 22113331321 its reverse (12313331122), we get a palindrome (34426662443).

The spelling of 22113331321 in words is "twenty-two billion, one hundred thirteen million, three hundred thirty-one thousand, three hundred twenty-one".