22215252007757 has 2 divisors, whose sum is σ = 22215252007758. Its totient is φ = 22215252007756.

The previous prime is 22215252007747. The next prime is 22215252007889. The reversal of 22215252007757 is 75770025251222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15362684064676 + 6852567943081 = 3919526^2 + 2617741^2 .

It is a cyclic number.

It is not a de Polignac number, because 22215252007757 - 2²² = 22215247813453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22215252007747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107626003878 + 11107626003879.

It is an arithmetic number, because the mean of its divisors is an integer number (11107626003879).

Almost surely, 2^{22215252007757} is an apocalyptic number.

It is an amenable number.

22215252007757 is a deficient number, since it is larger than the sum of its proper divisors (1).

22215252007757 is an equidigital number, since it uses as much as digits as its factorization.

22215252007757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1372000, while the sum is 47.

Adding to 22215252007757 its reverse (75770025251222), we get a palindrome (97985277258979).

The spelling of 22215252007757 in words is "twenty-two trillion, two hundred fifteen billion, two hundred fifty-two million, seven thousand, seven hundred fifty-seven".