222128161919957 has 2 divisors, whose sum is σ = 222128161919958. Its totient is φ = 222128161919956.

The previous prime is 222128161919941. The next prime is 222128161920031. The reversal of 222128161919957 is 759919161821222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121893103951441 + 100235057968516 = 11040521^2 + 10011746^2 .

It is a cyclic number.

It is not a de Polignac number, because 222128161919957 - 2⁴ = 222128161919941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222128161919893 and 222128161919902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222128161909957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111064080959978 + 111064080959979.

It is an arithmetic number, because the mean of its divisors is an integer number (111064080959979).

Almost surely, 2^{222128161919957} is an apocalyptic number.

It is an amenable number.

222128161919957 is a deficient number, since it is larger than the sum of its proper divisors (1).

222128161919957 is an equidigital number, since it uses as much as digits as its factorization.

222128161919957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 65.

The spelling of 222128161919957 in words is "two hundred twenty-two trillion, one hundred twenty-eight billion, one hundred sixty-one million, nine hundred nineteen thousand, nine hundred fifty-seven".