222211111121957 has 2 divisors, whose sum is σ = 222211111121958. Its totient is φ = 222211111121956.

The previous prime is 222211111121941. The next prime is 222211111122029. The reversal of 222211111121957 is 759121111112222.

222211111121957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155406790683076 + 66804320438881 = 12466226^2 + 8173391^2 .

It is a cyclic number.

It is not a de Polignac number, because 222211111121957 - 2⁴ = 222211111121941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222211111121957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222211111121257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105555560978 + 111105555560979.

It is an arithmetic number, because the mean of its divisors is an integer number (111105555560979).

Almost surely, 2^{222211111121957} is an apocalyptic number.

It is an amenable number.

222211111121957 is a deficient number, since it is larger than the sum of its proper divisors (1).

222211111121957 is an equidigital number, since it uses as much as digits as its factorization.

222211111121957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 38.

The spelling of 222211111121957 in words is "two hundred twenty-two trillion, two hundred eleven billion, one hundred eleven million, one hundred twenty-one thousand, nine hundred fifty-seven".