2102011979 has 2 divisors, whose sum is σ = 2102011980. Its totient is φ = 2102011978.

The previous prime is 2102011907. The next prime is 2102011981. The reversal of 2102011979 is 9791102012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102011979 is a prime.

Together with 2102011981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2102031979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051005989 + 1051005990.

It is an arithmetic number, because the mean of its divisors is an integer number (1051005990).

Almost surely, 2^2102011979 is an apocalyptic number.

2102011979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102011979 is an equidigital number, since it uses as much as digits as its factorization.

2102011979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 2102011979 is about 45847.7041846154. The cubic root of 2102011979 is about 1280.9880024463.

The spelling of 2102011979 in words is "two billion, one hundred two million, eleven thousand, nine hundred seventy-nine".