1011020099 has 2 divisors, whose sum is σ = 1011020100. Its totient is φ = 1011020098.

The previous prime is 1011020093. The next prime is 1011020123. The reversal of 1011020099 is 9900201101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011020099 - 2¹² = 1011016003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1011020093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505510049 + 505510050.

It is an arithmetic number, because the mean of its divisors is an integer number (505510050).

Almost surely, 2^1011020099 is an apocalyptic number.

1011020099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011020099 is an equidigital number, since it uses as much as digits as its factorization.

1011020099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1011020099 is about 31796.5422491188. The cubic root of 1011020099 is about 1003.6599547227.

The spelling of 1011020099 in words is "one billion, eleven million, twenty thousand, ninety-nine".