1021013099 has 2 divisors, whose sum is σ = 1021013100. Its totient is φ = 1021013098.

The previous prime is 1021013093. The next prime is 1021013131. The reversal of 1021013099 is 9903101201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021013099 - 2²⁸ = 752577643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021013093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510506549 + 510506550.

It is an arithmetic number, because the mean of its divisors is an integer number (510506550).

Almost surely, 2^1021013099 is an apocalyptic number.

1021013099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021013099 is an equidigital number, since it uses as much as digits as its factorization.

1021013099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 1021013099 is about 31953.2955890312. The cubic root of 1021013099 is about 1006.9558700210.

The spelling of 1021013099 in words is "one billion, twenty-one million, thirteen thousand, ninety-nine".