22231033331237 has 2 divisors, whose sum is σ = 22231033331238. Its totient is φ = 22231033331236.

The previous prime is 22231033331209. The next prime is 22231033331239. The reversal of 22231033331237 is 73213333013222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16056161196196 + 6174872135041 = 4007014^2 + 2484929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22231033331237 is a prime.

Together with 22231033331239, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22231033331197 and 22231033331206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22231033331239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115516665618 + 11115516665619.

It is an arithmetic number, because the mean of its divisors is an integer number (11115516665619).

Almost surely, 2^{22231033331237} is an apocalyptic number.

It is an amenable number.

22231033331237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231033331237 is an equidigital number, since it uses as much as digits as its factorization.

22231033331237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 35.

Adding to 22231033331237 its reverse (73213333013222), we get a palindrome (95444366344459).

The spelling of 22231033331237 in words is "twenty-two trillion, two hundred thirty-one billion, thirty-three million, three hundred thirty-one thousand, two hundred thirty-seven".