22521113 has 2 divisors, whose sum is σ = 22521114. Its totient is φ = 22521112.

The previous prime is 22521101. The next prime is 22521133. The reversal of 22521113 is 31112522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21049744 + 1471369 = 4588^2 + 1213^2 .

It is a cyclic number.

It is not a de Polignac number, because 22521113 - 2¹² = 22517017 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22521091 and 22521100.

It is not a weakly prime, because it can be changed into another prime (22521133) 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, 11260556 + 11260557.

It is an arithmetic number, because the mean of its divisors is an integer number (11260557).

Almost surely, 2^22521113 is an apocalyptic number.

It is an amenable number.

22521113 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521113 is an equidigital number, since it uses as much as digits as its factorization.

22521113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 17.

The square root of 22521113 is about 4745.6414740265. The cubic root of 22521113 is about 282.3990836975.

Adding to 22521113 its reverse (31112522), we get a palindrome (53633635).

The spelling of 22521113 in words is "twenty-two million, five hundred twenty-one thousand, one hundred thirteen".