212120011000979 has 2 divisors, whose sum is σ = 212120011000980. Its totient is φ = 212120011000978.

The previous prime is 212120011000973. The next prime is 212120011001033. The reversal of 212120011000979 is 979000110021212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212120011000979 is a prime.

It is not a weakly prime, because it can be changed into another prime (212120011000973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060005500489 + 106060005500490.

It is an arithmetic number, because the mean of its divisors is an integer number (106060005500490).

Almost surely, 2^{212120011000979} is an apocalyptic number.

212120011000979 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120011000979 is an equidigital number, since it uses as much as digits as its factorization.

212120011000979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 212120011000979 in words is "two hundred twelve trillion, one hundred twenty billion, eleven million, nine hundred seventy-nine", and thus it is an aban number.