111121222021079 has 2 divisors, whose sum is σ = 111121222021080. Its totient is φ = 111121222021078.

The previous prime is 111121222021039. The next prime is 111121222021123. The reversal of 111121222021079 is 970120222121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111121222021079 - 2²⁸ = 111120953585623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111121222021039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560611010539 + 55560611010540.

It is an arithmetic number, because the mean of its divisors is an integer number (55560611010540).

Almost surely, 2^{111121222021079} is an apocalyptic number.

111121222021079 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121222021079 is an equidigital number, since it uses as much as digits as its factorization.

111121222021079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 32.

The spelling of 111121222021079 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, seventy-nine".