100992821140909 has 2 divisors, whose sum is σ = 100992821140910. Its totient is φ = 100992821140908.

The previous prime is 100992821140889. The next prime is 100992821140927. The reversal of 100992821140909 is 909041128299001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93859766015625 + 7133055125284 = 9688125^2 + 2670778^2 .

It is a cyclic number.

It is not a de Polignac number, because 100992821140909 - 2⁵ = 100992821140877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100992821140909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100992821540909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50496410570454 + 50496410570455.

It is an arithmetic number, because the mean of its divisors is an integer number (50496410570455).

Almost surely, 2^{100992821140909} is an apocalyptic number.

It is an amenable number.

100992821140909 is a deficient number, since it is larger than the sum of its proper divisors (1).

100992821140909 is an equidigital number, since it uses as much as digits as its factorization.

100992821140909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 55.

The spelling of 100992821140909 in words is "one hundred trillion, nine hundred ninety-two billion, eight hundred twenty-one million, one hundred forty thousand, nine hundred nine".