22521121279 has 2 divisors, whose sum is σ = 22521121280. Its totient is φ = 22521121278.

The previous prime is 22521121277. The next prime is 22521121379. The reversal of 22521121279 is 97212112522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22521121279 - 2¹ = 22521121277 is a prime.

Together with 22521121277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22521121277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260560639 + 11260560640.

It is an arithmetic number, because the mean of its divisors is an integer number (11260560640).

Almost surely, 2^22521121279 is an apocalyptic number.

22521121279 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521121279 is an equidigital number, since it uses as much as digits as its factorization.

22521121279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The spelling of 22521121279 in words is "twenty-two billion, five hundred twenty-one million, one hundred twenty-one thousand, two hundred seventy-nine".