2101011099997 has 2 divisors, whose sum is σ = 2101011099998. Its totient is φ = 2101011099996.

The previous prime is 2101011099991. The next prime is 2101011100043. The reversal of 2101011099997 is 7999901101012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2099887911801 + 1123188196 = 1449099^2 + 33514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101011099997 - 2³¹ = 2098863616349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101011099997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101011099991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050505549998 + 1050505549999.

It is an arithmetic number, because the mean of its divisors is an integer number (1050505549999).

Almost surely, 2^{2101011099997} is an apocalyptic number.

It is an amenable number.

2101011099997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101011099997 is an equidigital number, since it uses as much as digits as its factorization.

2101011099997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 49.

The spelling of 2101011099997 in words is "two trillion, one hundred one billion, eleven million, ninety-nine thousand, nine hundred ninety-seven".