212011979 has 2 divisors, whose sum is σ = 212011980. Its totient is φ = 212011978.

The previous prime is 212011967. The next prime is 212011993. The reversal of 212011979 is 979110212.

212011979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212011979 - 2¹⁶ = 211946443 is a prime.

It is not a weakly prime, because it can be changed into another prime (212011909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005989 + 106005990.

It is an arithmetic number, because the mean of its divisors is an integer number (106005990).

Almost surely, 2^212011979 is an apocalyptic number.

212011979 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011979 is an equidigital number, since it uses as much as digits as its factorization.

212011979 is an evil number, because the sum of its binary digits is even.

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

The square root of 212011979 is about 14560.6311332991. The cubic root of 212011979 is about 596.2844263122.

The spelling of 212011979 in words is "two hundred twelve million, eleven thousand, nine hundred seventy-nine".