2101029091 has 12 divisors (see below), whose sum is σ = 2486837392. Its totient is φ = 1738777824.

The previous prime is 2101029071. The next prime is 2101029097. The reversal of 2101029091 is 1909201012.

It is not a de Polignac number, because 2101029091 - 2⁵ = 2101029059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101029097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172560 + ... + 184333.

Almost surely, 2^2101029091 is an apocalyptic number.

2101029091 is a deficient number, since it is larger than the sum of its proper divisors (385808301).

2101029091 is an equidigital number, since it uses as much as digits as its factorization.

2101029091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356958 (or 356929 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 2101029091 is about 45836.9838776506. The cubic root of 2101029091 is about 1280.7883105886.

The spelling of 2101029091 in words is "two billion, one hundred one million, twenty-nine thousand, ninety-one".