1012109999 has 2 divisors, whose sum is σ = 1012110000. Its totient is φ = 1012109998.

The previous prime is 1012109983. The next prime is 1012110007. The reversal of 1012109999 is 9999012101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012109999 - 2⁴ = 1012109983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012109939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506054999 + 506055000.

It is an arithmetic number, because the mean of its divisors is an integer number (506055000).

Almost surely, 2^1012109999 is an apocalyptic number.

1012109999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012109999 is an equidigital number, since it uses as much as digits as its factorization.

1012109999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 41.

The square root of 1012109999 is about 31813.6762886655. The cubic root of 1012109999 is about 1004.0204804079.

The spelling of 1012109999 in words is "one billion, twelve million, one hundred nine thousand, nine hundred ninety-nine".