222219968857 has 2 divisors, whose sum is σ = 222219968858. Its totient is φ = 222219968856.

The previous prime is 222219968801. The next prime is 222219968897. The reversal of 222219968857 is 758869912222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209627538201 + 12592430656 = 457851^2 + 112216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222219968857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222219968795 and 222219968804.

It is not a weakly prime, because it can be changed into another prime (222219968897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111109984428 + 111109984429.

It is an arithmetic number, because the mean of its divisors is an integer number (111109984429).

Almost surely, 2^222219968857 is an apocalyptic number.

It is an amenable number.

222219968857 is a deficient number, since it is larger than the sum of its proper divisors (1).

222219968857 is an equidigital number, since it uses as much as digits as its factorization.

222219968857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 61.

The spelling of 222219968857 in words is "two hundred twenty-two billion, two hundred nineteen million, nine hundred sixty-eight thousand, eight hundred fifty-seven".