22521121379 has 2 divisors, whose sum is σ = 22521121380. Its totient is φ = 22521121378.

The previous prime is 22521121279. The next prime is 22521121391. The reversal of 22521121379 is 97312112522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22521121379 is a prime.

It is not a weakly prime, because it can be changed into another prime (22521121279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260560689 + 11260560690.

It is an arithmetic number, because the mean of its divisors is an integer number (11260560690).

Almost surely, 2^22521121379 is an apocalyptic number.

22521121379 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521121379 is an equidigital number, since it uses as much as digits as its factorization.

22521121379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The spelling of 22521121379 in words is "twenty-two billion, five hundred twenty-one million, one hundred twenty-one thousand, three hundred seventy-nine".