100120002121309 has 2 divisors, whose sum is σ = 100120002121310. Its totient is φ = 100120002121308.

The previous prime is 100120002121301. The next prime is 100120002121319. The reversal of 100120002121309 is 903121200021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79561440557284 + 20558561564025 = 8919722^2 + 4534155^2 .

It is a cyclic number.

It is not a de Polignac number, because 100120002121309 - 2³ = 100120002121301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100120002121309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100120002121301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060001060654 + 50060001060655.

It is an arithmetic number, because the mean of its divisors is an integer number (50060001060655).

Almost surely, 2^{100120002121309} is an apocalyptic number.

It is an amenable number.

100120002121309 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120002121309 is an equidigital number, since it uses as much as digits as its factorization.

100120002121309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 100120002121309 in words is "one hundred trillion, one hundred twenty billion, two million, one hundred twenty-one thousand, three hundred nine".