2122211208977 has 2 divisors, whose sum is σ = 2122211208978. Its totient is φ = 2122211208976.

The previous prime is 2122211208961. The next prime is 2122211208989. The reversal of 2122211208977 is 7798021122212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1430521249936 + 691689959041 = 1196044^2 + 831679^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122211208977 - 2⁴ = 2122211208961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2122211208577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061105604488 + 1061105604489.

It is an arithmetic number, because the mean of its divisors is an integer number (1061105604489).

Almost surely, 2^{2122211208977} is an apocalyptic number.

It is an amenable number.

2122211208977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122211208977 is an equidigital number, since it uses as much as digits as its factorization.

2122211208977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 2122211208977 in words is "two trillion, one hundred twenty-two billion, two hundred eleven million, two hundred eight thousand, nine hundred seventy-seven".