22121113361 has 2 divisors, whose sum is σ = 22121113362. Its totient is φ = 22121113360.

The previous prime is 22121113321. The next prime is 22121113363. The reversal of 22121113361 is 16331112122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21913176961 + 207936400 = 148031^2 + 14420^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121113361 - 2³⁰ = 21047371537 is a prime.

Together with 22121113363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22121113363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060556680 + 11060556681.

It is an arithmetic number, because the mean of its divisors is an integer number (11060556681).

Almost surely, 2^22121113361 is an apocalyptic number.

It is an amenable number.

22121113361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121113361 is an equidigital number, since it uses as much as digits as its factorization.

22121113361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

Adding to 22121113361 its reverse (16331112122), we get a palindrome (38452225483).

The spelling of 22121113361 in words is "twenty-two billion, one hundred twenty-one million, one hundred thirteen thousand, three hundred sixty-one".