122221021111979 has 2 divisors, whose sum is σ = 122221021111980. Its totient is φ = 122221021111978.

The previous prime is 122221021111963. The next prime is 122221021111997. The reversal of 122221021111979 is 979111120122221.

Together with next prime (122221021111997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122221021111979 - 2⁴ = 122221021111963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (122221021111279) 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, 61110510555989 + 61110510555990.

It is an arithmetic number, because the mean of its divisors is an integer number (61110510555990).

Almost surely, 2^{122221021111979} is an apocalyptic number.

122221021111979 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221021111979 is an equidigital number, since it uses as much as digits as its factorization.

122221021111979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 122221021111979 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, twenty-one million, one hundred eleven thousand, nine hundred seventy-nine".