1011011999 has 2 divisors, whose sum is σ = 1011012000. Its totient is φ = 1011011998.

The previous prime is 1011011993. The next prime is 1011012031. The reversal of 1011011999 is 9991101101.

It is an a-pointer prime, because the next prime (1011012031) can be obtained adding 1011011999 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011011999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011011993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505505999 + 505506000.

It is an arithmetic number, because the mean of its divisors is an integer number (505506000).

Almost surely, 2^1011011999 is an apocalyptic number.

1011011999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011011999 is an equidigital number, since it uses as much as digits as its factorization.

1011011999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 32.

The square root of 1011011999 is about 31796.4148765234. The cubic root of 1011011999 is about 1003.6572743714.

The spelling of 1011011999 in words is "one billion, eleven million, eleven thousand, nine hundred ninety-nine".