1021133099 has 6 divisors (see below), whose sum is σ = 1187848764. Its totient is φ = 875256900.

The previous prime is 1021133063. The next prime is 1021133159. The reversal of 1021133099 is 9903311201.

It is not a de Polignac number, because 1021133099 - 2²⁸ = 752697643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021133699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10419677 + ... + 10419774.

It is an arithmetic number, because the mean of its divisors is an integer number (197974794).

Almost surely, 2^1021133099 is an apocalyptic number.

1021133099 is a deficient number, since it is larger than the sum of its proper divisors (166715665).

1021133099 is an equidigital number, since it uses as much as digits as its factorization.

1021133099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20839465 (or 20839458 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1021133099 is about 31955.1732744481. The cubic root of 1021133099 is about 1006.9953177587.

The spelling of 1021133099 in words is "one billion, twenty-one million, one hundred thirty-three thousand, ninety-nine".