100421412209 has 2 divisors, whose sum is σ = 100421412210. Its totient is φ = 100421412208.

The previous prime is 100421412173. The next prime is 100421412263. The reversal of 100421412209 is 902214124001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72589830625 + 27831581584 = 269425^2 + 166828^2 .

It is a cyclic number.

It is not a de Polignac number, because 100421412209 - 2²⁰ = 100420363633 is a prime.

It is not a weakly prime, because it can be changed into another prime (100421412269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210706104 + 50210706105.

It is an arithmetic number, because the mean of its divisors is an integer number (50210706105).

Almost surely, 2^100421412209 is an apocalyptic number.

It is an amenable number.

100421412209 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421412209 is an equidigital number, since it uses as much as digits as its factorization.

100421412209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 100421412209 in words is "one hundred billion, four hundred twenty-one million, four hundred twelve thousand, two hundred nine".