22567121 has 2 divisors, whose sum is σ = 22567122. Its totient is φ = 22567120.

The previous prime is 22567091. The next prime is 22567123. The reversal of 22567121 is 12176522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12327121 + 10240000 = 3511^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 22567121 - 2¹⁰ = 22566097 is a prime.

Together with 22567123, 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 (22567123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11283560 + 11283561.

It is an arithmetic number, because the mean of its divisors is an integer number (11283561).

Almost surely, 2^22567121 is an apocalyptic number.

It is an amenable number.

22567121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22567121 is an equidigital number, since it uses as much as digits as its factorization.

22567121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 22567121 is about 4750.4863961493. The cubic root of 22567121 is about 282.5912556623.

The spelling of 22567121 in words is "twenty-two million, five hundred sixty-seven thousand, one hundred twenty-one".