101199999997 has 2 divisors, whose sum is σ = 101199999998. Its totient is φ = 101199999996.

The previous prime is 101199999961. The next prime is 101200000007. The reversal of 101199999997 is 799999991101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77251199481 + 23948800516 = 277941^2 + 154754^2 .

It is a cyclic number.

It is not a de Polignac number, because 101199999997 - 2⁷ = 101199999869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101199994997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50599999998 + 50599999999.

It is an arithmetic number, because the mean of its divisors is an integer number (50599999999).

Almost surely, 2^101199999997 is an apocalyptic number.

It is an amenable number.

101199999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

101199999997 is an equidigital number, since it uses as much as digits as its factorization.

101199999997 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 73.

The spelling of 101199999997 in words is "one hundred one billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-seven".