22161019357 has 2 divisors, whose sum is σ = 22161019358. Its totient is φ = 22161019356.

The previous prime is 22161019319. The next prime is 22161019399. The reversal of 22161019357 is 75391016122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13442315481 + 8718703876 = 115941^2 + 93374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22161019357 is a prime.

It is a super-2 number, since 2×22161019357² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22161017357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11080509678 + 11080509679.

It is an arithmetic number, because the mean of its divisors is an integer number (11080509679).

Almost surely, 2^22161019357 is an apocalyptic number.

It is an amenable number.

22161019357 is a deficient number, since it is larger than the sum of its proper divisors (1).

22161019357 is an equidigital number, since it uses as much as digits as its factorization.

22161019357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 22161019357 in words is "twenty-two billion, one hundred sixty-one million, nineteen thousand, three hundred fifty-seven".