211112020220977 has 2 divisors, whose sum is σ = 211112020220978. Its totient is φ = 211112020220976.

The previous prime is 211112020220923. The next prime is 211112020221029. The reversal of 211112020220977 is 779022020211112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155272508583921 + 55839511637056 = 12460839^2 + 7472584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211112020220977 is a prime.

It is not a weakly prime, because it can be changed into another prime (211112020220077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105556010110488 + 105556010110489.

It is an arithmetic number, because the mean of its divisors is an integer number (105556010110489).

Almost surely, 2^{211112020220977} is an apocalyptic number.

It is an amenable number.

211112020220977 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112020220977 is an equidigital number, since it uses as much as digits as its factorization.

211112020220977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 211112020220977 in words is "two hundred eleven trillion, one hundred twelve billion, twenty million, two hundred twenty thousand, nine hundred seventy-seven".