10120120999 has 2 divisors, whose sum is σ = 10120121000. Its totient is φ = 10120120998.

The previous prime is 10120120991. The next prime is 10120121047. The reversal of 10120120999 is 99902102101.

10120120999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10120120999 - 2³ = 10120120991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120120991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060060499 + 5060060500.

It is an arithmetic number, because the mean of its divisors is an integer number (5060060500).

Almost surely, 2^10120120999 is an apocalyptic number.

10120120999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120120999 is an equidigital number, since it uses as much as digits as its factorization.

10120120999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 10120120999 in words is "ten billion, one hundred twenty million, one hundred twenty thousand, nine hundred ninety-nine".