111220212079 has 2 divisors, whose sum is σ = 111220212080. Its totient is φ = 111220212078.

The previous prime is 111220212067. The next prime is 111220212107. The reversal of 111220212079 is 970212022111.

It is an a-pointer prime, because the next prime (111220212107) can be obtained adding 111220212079 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (970212022111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111220212079 - 2¹⁵ = 111220179311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111220212029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610106039 + 55610106040.

It is an arithmetic number, because the mean of its divisors is an integer number (55610106040).

Almost surely, 2^111220212079 is an apocalyptic number.

111220212079 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220212079 is an equidigital number, since it uses as much as digits as its factorization.

111220212079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 111220212079 in words is "one hundred eleven billion, two hundred twenty million, two hundred twelve thousand, seventy-nine".