2122221111979 has 2 divisors, whose sum is σ = 2122221111980. Its totient is φ = 2122221111978.

The previous prime is 2122221111971. The next prime is 2122221112001. The reversal of 2122221111979 is 9791111222212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122221111979 - 2³ = 2122221111971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2122221111971) 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, 1061110555989 + 1061110555990.

It is an arithmetic number, because the mean of its divisors is an integer number (1061110555990).

Almost surely, 2^{2122221111979} is an apocalyptic number.

2122221111979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122221111979 is an equidigital number, since it uses as much as digits as its factorization.

2122221111979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 40.

The spelling of 2122221111979 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, nine hundred seventy-nine".