2212111201957 has 2 divisors, whose sum is σ = 2212111201958. Its totient is φ = 2212111201956.

The previous prime is 2212111201913. The next prime is 2212111202003. The reversal of 2212111201957 is 7591021112122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1409239648996 + 802871552961 = 1187114^2 + 896031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212111201957 - 2⁷ = 2212111201829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212111201357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106055600978 + 1106055600979.

It is an arithmetic number, because the mean of its divisors is an integer number (1106055600979).

Almost surely, 2^{2212111201957} is an apocalyptic number.

It is an amenable number.

2212111201957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212111201957 is an equidigital number, since it uses as much as digits as its factorization.

2212111201957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 34.

The spelling of 2212111201957 in words is "two trillion, two hundred twelve billion, one hundred eleven million, two hundred one thousand, nine hundred fifty-seven".