99997099901 has 2 divisors, whose sum is σ = 99997099902. Its totient is φ = 99997099900.

The previous prime is 99997099879. The next prime is 99997099903. The reversal of 99997099901 is 10999079999.

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., 87541423876 + 12455676025 = 295874^2 + 111605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99997099901 is a prime.

It is a super-2 number, since 2×99997099901² (a number of 23 digits) contains 22 as substring.

Together with 99997099903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99997099903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49998549950 + 49998549951.

It is an arithmetic number, because the mean of its divisors is an integer number (49998549951).

Almost surely, 2^99997099901 is an apocalyptic number.

It is an amenable number.

99997099901 is a deficient number, since it is larger than the sum of its proper divisors (1).

99997099901 is an equidigital number, since it uses as much as digits as its factorization.

99997099901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33480783, while the sum is 71.

The spelling of 99997099901 in words is "ninety-nine billion, nine hundred ninety-seven million, ninety-nine thousand, nine hundred one".