2100110199977 has 2 divisors, whose sum is σ = 2100110199978. Its totient is φ = 2100110199976.

The previous prime is 2100110199947. The next prime is 2100110200031. The reversal of 2100110199977 is 7799910110012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1571422702096 + 528687497881 = 1253564^2 + 727109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100110199977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100110199947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050055099988 + 1050055099989.

It is an arithmetic number, because the mean of its divisors is an integer number (1050055099989).

Almost surely, 2^{2100110199977} is an apocalyptic number.

It is an amenable number.

2100110199977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100110199977 is an equidigital number, since it uses as much as digits as its factorization.

2100110199977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 47.

The spelling of 2100110199977 in words is "two trillion, one hundred billion, one hundred ten million, one hundred ninety-nine thousand, nine hundred seventy-seven".