3221220121079 has 2 divisors, whose sum is σ = 3221220121080. Its totient is φ = 3221220121078.

The previous prime is 3221220121057. The next prime is 3221220121103. The reversal of 3221220121079 is 9701210221223.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221220121079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221220121019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610610060539 + 1610610060540.

It is an arithmetic number, because the mean of its divisors is an integer number (1610610060540).

Almost surely, 2^{3221220121079} is an apocalyptic number.

3221220121079 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221220121079 is an equidigital number, since it uses as much as digits as its factorization.

3221220121079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 3221220121079 in words is "three trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, seventy-nine".