22451222215393 has 2 divisors, whose sum is σ = 22451222215394. Its totient is φ = 22451222215392.

The previous prime is 22451222215391. The next prime is 22451222215447. The reversal of 22451222215393 is 39351222215422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21055828127569 + 1395394087824 = 4588663^2 + 1181268^2 .

It is a cyclic number.

It is not a de Polignac number, because 22451222215393 - 2¹ = 22451222215391 is a prime.

It is a super-2 number, since 2×22451222215393² (a number of 28 digits) contains 22 as substring.

Together with 22451222215391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22451222215391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11225611107696 + 11225611107697.

It is an arithmetic number, because the mean of its divisors is an integer number (11225611107697).

Almost surely, 2^{22451222215393} is an apocalyptic number.

It is an amenable number.

22451222215393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22451222215393 is an equidigital number, since it uses as much as digits as its factorization.

22451222215393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 43.

The spelling of 22451222215393 in words is "twenty-two trillion, four hundred fifty-one billion, two hundred twenty-two million, two hundred fifteen thousand, three hundred ninety-three".