2120210999 has 2 divisors, whose sum is σ = 2120211000. Its totient is φ = 2120210998.

The previous prime is 2120210959. The next prime is 2120211011. The reversal of 2120210999 is 9990120212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120210999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120210959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060105499 + 1060105500.

It is an arithmetic number, because the mean of its divisors is an integer number (1060105500).

Almost surely, 2^2120210999 is an apocalyptic number.

2120210999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120210999 is an equidigital number, since it uses as much as digits as its factorization.

2120210999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 2120210999 is about 46045.7489785974. The cubic root of 2120210999 is about 1284.6742751658.

The spelling of 2120210999 in words is "two billion, one hundred twenty million, two hundred ten thousand, nine hundred ninety-nine".