1020312100999 has 2 divisors, whose sum is σ = 1020312101000. Its totient is φ = 1020312100998.

The previous prime is 1020312100981. The next prime is 1020312101009. The reversal of 1020312100999 is 9990012130201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020312100999 - 2⁹ = 1020312100487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020312100099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510156050499 + 510156050500.

It is an arithmetic number, because the mean of its divisors is an integer number (510156050500).

Almost surely, 2^{1020312100999} is an apocalyptic number.

1020312100999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020312100999 is an equidigital number, since it uses as much as digits as its factorization.

1020312100999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 1020312100999 in words is "one trillion, twenty billion, three hundred twelve million, one hundred thousand, nine hundred ninety-nine".