120999124859 has 2 divisors, whose sum is σ = 120999124860. Its totient is φ = 120999124858.

The previous prime is 120999124819. The next prime is 120999124861. The reversal of 120999124859 is 958421999021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120999124859 - 2²⁴ = 120982347643 is a prime.

It is a Sophie Germain prime.

Together with 120999124861, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120999124798 and 120999124807.

It is not a weakly prime, because it can be changed into another prime (120999124819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60499562429 + 60499562430.

It is an arithmetic number, because the mean of its divisors is an integer number (60499562430).

Almost surely, 2^120999124859 is an apocalyptic number.

120999124859 is a deficient number, since it is larger than the sum of its proper divisors (1).

120999124859 is an equidigital number, since it uses as much as digits as its factorization.

120999124859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 59.

The spelling of 120999124859 in words is "one hundred twenty billion, nine hundred ninety-nine million, one hundred twenty-four thousand, eight hundred fifty-nine".