2011219979 has 2 divisors, whose sum is σ = 2011219980. Its totient is φ = 2011219978.

The previous prime is 2011219957. The next prime is 2011220009. The reversal of 2011219979 is 9799121102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011219979 - 2²⁸ = 1742784523 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011219909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005609989 + 1005609990.

It is an arithmetic number, because the mean of its divisors is an integer number (1005609990).

Almost surely, 2^2011219979 is an apocalyptic number.

2011219979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011219979 is an equidigital number, since it uses as much as digits as its factorization.

2011219979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 41.

The square root of 2011219979 is about 44846.6272867871. The cubic root of 2011219979 is about 1262.2727057273.

The spelling of 2011219979 in words is "two billion, eleven million, two hundred nineteen thousand, nine hundred seventy-nine".