22131259 has 2 divisors, whose sum is σ = 22131260. Its totient is φ = 22131258.

The previous prime is 22131223. The next prime is 22131269. The reversal of 22131259 is 95213122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22131259 - 2²¹ = 20034107 is a prime.

It is not a weakly prime, because it can be changed into another prime (22131269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065629 + 11065630.

It is an arithmetic number, because the mean of its divisors is an integer number (11065630).

Almost surely, 2^22131259 is an apocalyptic number.

22131259 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131259 is an equidigital number, since it uses as much as digits as its factorization.

22131259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 22131259 is about 4704.3872077030. The cubic root of 22131259 is about 280.7600903973.

The spelling of 22131259 in words is "twenty-two million, one hundred thirty-one thousand, two hundred fifty-nine".