2101120099997 has 2 divisors, whose sum is σ = 2101120099998. Its totient is φ = 2101120099996.

The previous prime is 2101120099993. The next prime is 2101120100011. The reversal of 2101120099997 is 7999900211012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1274864551801 + 826255548196 = 1129099^2 + 908986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101120099997 - 2² = 2101120099993 is a prime.

It is a super-2 number, since 2×2101120099997² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101120099993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050560049998 + 1050560049999.

It is an arithmetic number, because the mean of its divisors is an integer number (1050560049999).

Almost surely, 2^{2101120099997} is an apocalyptic number.

It is an amenable number.

2101120099997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101120099997 is an equidigital number, since it uses as much as digits as its factorization.

2101120099997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 50.

The spelling of 2101120099997 in words is "two trillion, one hundred one billion, one hundred twenty million, ninety-nine thousand, nine hundred ninety-seven".