111221222239 has 2 divisors, whose sum is σ = 111221222240. Its totient is φ = 111221222238.

The previous prime is 111221222221. The next prime is 111221222261. The reversal of 111221222239 is 932222122111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111221222239 - 2¹¹ = 111221220191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221222219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610611119 + 55610611120.

It is an arithmetic number, because the mean of its divisors is an integer number (55610611120).

Almost surely, 2^111221222239 is an apocalyptic number.

111221222239 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221222239 is an equidigital number, since it uses as much as digits as its factorization.

111221222239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The spelling of 111221222239 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred thirty-nine".