2101030999 has 2 divisors, whose sum is σ = 2101031000. Its totient is φ = 2101030998.

The previous prime is 2101030973. The next prime is 2101031027. The reversal of 2101030999 is 9990301012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101030999 - 2⁷ = 2101030871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101030909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050515499 + 1050515500.

It is an arithmetic number, because the mean of its divisors is an integer number (1050515500).

Almost surely, 2^2101030999 is an apocalyptic number.

2101030999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101030999 is an equidigital number, since it uses as much as digits as its factorization.

2101030999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 2101030999 is about 45837.0046905336. The cubic root of 2101030999 is about 1280.7886982944.

The spelling of 2101030999 in words is "two billion, one hundred one million, thirty thousand, nine hundred ninety-nine".