2101211239 has 2 divisors, whose sum is σ = 2101211240. Its totient is φ = 2101211238.

The previous prime is 2101211179. The next prime is 2101211243. The reversal of 2101211239 is 9321121012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101211239 - 2²³ = 2092822631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101211249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050605619 + 1050605620.

It is an arithmetic number, because the mean of its divisors is an integer number (1050605620).

Almost surely, 2^2101211239 is an apocalyptic number.

2101211239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101211239 is an equidigital number, since it uses as much as digits as its factorization.

2101211239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 2101211239 is about 45838.9707454258. The cubic root of 2101211239 is about 1280.8253220209.

The spelling of 2101211239 in words is "two billion, one hundred one million, two hundred eleven thousand, two hundred thirty-nine".