104021021099 has 2 divisors, whose sum is σ = 104021021100. Its totient is φ = 104021021098.

The previous prime is 104021021089. The next prime is 104021021119. The reversal of 104021021099 is 990120120401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104021021099 - 2³⁶ = 35301544363 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (104021021009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52010510549 + 52010510550.

It is an arithmetic number, because the mean of its divisors is an integer number (52010510550).

Almost surely, 2^104021021099 is an apocalyptic number.

104021021099 is a deficient number, since it is larger than the sum of its proper divisors (1).

104021021099 is an equidigital number, since it uses as much as digits as its factorization.

104021021099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 104021021099 in words is "one hundred four billion, twenty-one million, twenty-one thousand, ninety-nine".