2101997203 has 2 divisors, whose sum is σ = 2101997204. Its totient is φ = 2101997202.

The previous prime is 2101997197. The next prime is 2101997207. The reversal of 2101997203 is 3027991012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101997203 - 2⁵ = 2101997171 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101997207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050998601 + 1050998602.

It is an arithmetic number, because the mean of its divisors is an integer number (1050998602).

Almost surely, 2^2101997203 is an apocalyptic number.

2101997203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101997203 is an equidigital number, since it uses as much as digits as its factorization.

2101997203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 2101997203 is about 45847.5430421304. The cubic root of 2101997203 is about 1280.9850008898.

The spelling of 2101997203 in words is "two billion, one hundred one million, nine hundred ninety-seven thousand, two hundred three".