22512113 has 4 divisors (see below), whose sum is σ = 24243828. Its totient is φ = 20780400.

The previous prime is 22512053. The next prime is 22512143. The reversal of 22512113 is 31121522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31121522 = 2 ⋅15560761.

It can be written as a sum of positive squares in 2 ways, for example, as 908209 + 21603904 = 953^2 + 4648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22512113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22512091 and 22512100.

It is not an unprimeable number, because it can be changed into a prime (22512143) 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 in 3 ways as a sum of consecutive naturals, for example, 865838 + ... + 865863.

It is an arithmetic number, because the mean of its divisors is an integer number (6060957).

Almost surely, 2^22512113 is an apocalyptic number.

It is an amenable number.

22512113 is a deficient number, since it is larger than the sum of its proper divisors (1731715).

22512113 is a wasteful number, since it uses less digits than its factorization.

22512113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731714.

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

The square root of 22512113 is about 4744.6931407626. The cubic root of 22512113 is about 282.3614607732.

Adding to 22512113 its reverse (31121522), we get a palindrome (53633635).

The spelling of 22512113 in words is "twenty-two million, five hundred twelve thousand, one hundred thirteen".