22513051123237 has 2 divisors, whose sum is σ = 22513051123238. Its totient is φ = 22513051123236.

The previous prime is 22513051123231. The next prime is 22513051123273. The reversal of 22513051123237 is 73232115031522.

Together with next prime (22513051123273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20759013114436 + 1754038008801 = 4556206^2 + 1324401^2 .

It is a cyclic number.

It is not a de Polignac number, because 22513051123237 - 2³ = 22513051123229 is a prime.

It is a super-2 number, since 2×22513051123237² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22513051123196 and 22513051123205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22513051123231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11256525561618 + 11256525561619.

It is an arithmetic number, because the mean of its divisors is an integer number (11256525561619).

Almost surely, 2^{22513051123237} is an apocalyptic number.

It is an amenable number.

22513051123237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22513051123237 is an equidigital number, since it uses as much as digits as its factorization.

22513051123237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 37.

Adding to 22513051123237 its reverse (73232115031522), we get a palindrome (95745166154759).

The spelling of 22513051123237 in words is "twenty-two trillion, five hundred thirteen billion, fifty-one million, one hundred twenty-three thousand, two hundred thirty-seven".