211122110977 has 2 divisors, whose sum is σ = 211122110978. Its totient is φ = 211122110976.

The previous prime is 211122110971. The next prime is 211122111041. The reversal of 211122110977 is 779011221112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131566523841 + 79555587136 = 362721^2 + 282056^2 .

It is a cyclic number.

It is not a de Polignac number, because 211122110977 - 2³⁵ = 176762372609 is a prime.

It is not a weakly prime, because it can be changed into another prime (211122110971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561055488 + 105561055489.

It is an arithmetic number, because the mean of its divisors is an integer number (105561055489).

Almost surely, 2^211122110977 is an apocalyptic number.

It is an amenable number.

211122110977 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122110977 is an equidigital number, since it uses as much as digits as its factorization.

211122110977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 34.

The spelling of 211122110977 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred ten thousand, nine hundred seventy-seven".