211204979 has 2 divisors, whose sum is σ = 211204980. Its totient is φ = 211204978.

The previous prime is 211204933. The next prime is 211204993. The reversal of 211204979 is 979402112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211204979 - 2⁸ = 211204723 is a prime.

It is not a weakly prime, because it can be changed into another prime (211204919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105602489 + 105602490.

It is an arithmetic number, because the mean of its divisors is an integer number (105602490).

Almost surely, 2^211204979 is an apocalyptic number.

211204979 is a deficient number, since it is larger than the sum of its proper divisors (1).

211204979 is an equidigital number, since it uses as much as digits as its factorization.

211204979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 211204979 is about 14532.8930017392. The cubic root of 211204979 is about 595.5269009193.

The spelling of 211204979 in words is "two hundred eleven million, two hundred four thousand, nine hundred seventy-nine".