100110100099861 has 2 divisors, whose sum is σ = 100110100099862. Its totient is φ = 100110100099860.

The previous prime is 100110100099817. The next prime is 100110100099879. The reversal of 100110100099861 is 168990001011001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67494933180900 + 32615166918961 = 8215530^2 + 5710969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100110100099861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100110100099861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100110103099861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055050049930 + 50055050049931.

It is an arithmetic number, because the mean of its divisors is an integer number (50055050049931).

Almost surely, 2^{100110100099861} is an apocalyptic number.

It is an amenable number.

100110100099861 is a deficient number, since it is larger than the sum of its proper divisors (1).

100110100099861 is an equidigital number, since it uses as much as digits as its factorization.

100110100099861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 37.

The spelling of 100110100099861 in words is "one hundred trillion, one hundred ten billion, one hundred million, ninety-nine thousand, eight hundred sixty-one".