22135579 has 2 divisors, whose sum is σ = 22135580. Its totient is φ = 22135578.

The previous prime is 22135577. The next prime is 22135639. The reversal of 22135579 is 97553122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22135579 - 2¹ = 22135577 is a prime.

Together with 22135577, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22135577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11067789 + 11067790.

It is an arithmetic number, because the mean of its divisors is an integer number (11067790).

Almost surely, 2^22135579 is an apocalyptic number.

22135579 is a deficient number, since it is larger than the sum of its proper divisors (1).

22135579 is an equidigital number, since it uses as much as digits as its factorization.

22135579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 22135579 is about 4704.8463311781. The cubic root of 22135579 is about 280.7783572400.

The spelling of 22135579 in words is "twenty-two million, one hundred thirty-five thousand, five hundred seventy-nine".