100312021289 has 2 divisors, whose sum is σ = 100312021290. Its totient is φ = 100312021288.

The previous prime is 100312021247. The next prime is 100312021321. The reversal of 100312021289 is 982120213001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84976914064 + 15335107225 = 291508^2 + 123835^2 .

It is a cyclic number.

It is not a de Polignac number, because 100312021289 - 2²⁴ = 100295244073 is a prime.

It is not a weakly prime, because it can be changed into another prime (100312021889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50156010644 + 50156010645.

It is an arithmetic number, because the mean of its divisors is an integer number (50156010645).

Almost surely, 2^100312021289 is an apocalyptic number.

It is an amenable number.

100312021289 is a deficient number, since it is larger than the sum of its proper divisors (1).

100312021289 is an equidigital number, since it uses as much as digits as its factorization.

100312021289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 100312021289 in words is "one hundred billion, three hundred twelve million, twenty-one thousand, two hundred eighty-nine".