222266996599981 has 2 divisors, whose sum is σ = 222266996599982. Its totient is φ = 222266996599980.

The previous prime is 222266996599961. The next prime is 222266996599997. The reversal of 222266996599981 is 189995699662222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221189293084356 + 1077703515625 = 14872434^2 + 1038125^2 .

It is a cyclic number.

It is not a de Polignac number, because 222266996599981 - 2¹⁹ = 222266996075693 is a prime.

It is a super-2 number, since 2×222266996599981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222266996599961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111133498299990 + 111133498299991.

It is an arithmetic number, because the mean of its divisors is an integer number (111133498299991).

Almost surely, 2^{222266996599981} is an apocalyptic number.

It is an amenable number.

222266996599981 is a deficient number, since it is larger than the sum of its proper divisors (1).

222266996599981 is an equidigital number, since it uses as much as digits as its factorization.

222266996599981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8162933760, while the sum is 85.

The spelling of 222266996599981 in words is "two hundred twenty-two trillion, two hundred sixty-six billion, nine hundred ninety-six million, five hundred ninety-nine thousand, nine hundred eighty-one".