2100100697 has 2 divisors, whose sum is σ = 2100100698. Its totient is φ = 2100100696.

The previous prime is 2100100637. The next prime is 2100100699. The reversal of 2100100697 is 7960010012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1656408601 + 443692096 = 40699^2 + 21064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100100697 - 2⁸ = 2100100441 is a prime.

Together with 2100100699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2100100699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050050348 + 1050050349.

It is an arithmetic number, because the mean of its divisors is an integer number (1050050349).

Almost surely, 2^2100100697 is an apocalyptic number.

It is an amenable number.

2100100697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100100697 is an equidigital number, since it uses as much as digits as its factorization.

2100100697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 2100100697 is about 45826.8556307325. The cubic root of 2100100697 is about 1280.5996329905.

The spelling of 2100100697 in words is "two billion, one hundred million, one hundred thousand, six hundred ninety-seven".