22236781373 has 2 divisors, whose sum is σ = 22236781374. Its totient is φ = 22236781372.

The previous prime is 22236781319. The next prime is 22236781387. The reversal of 22236781373 is 37318763222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11227945444 + 11008835929 = 105962^2 + 104923^2 .

It is a cyclic number.

It is not a de Polignac number, because 22236781373 - 2⁸ = 22236781117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22236781673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118390686 + 11118390687.

It is an arithmetic number, because the mean of its divisors is an integer number (11118390687).

Almost surely, 2^22236781373 is an apocalyptic number.

It is an amenable number.

22236781373 is a deficient number, since it is larger than the sum of its proper divisors (1).

22236781373 is an equidigital number, since it uses as much as digits as its factorization.

22236781373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 44.

The spelling of 22236781373 in words is "twenty-two billion, two hundred thirty-six million, seven hundred eighty-one thousand, three hundred seventy-three".