111022111987 has 2 divisors, whose sum is σ = 111022111988. Its totient is φ = 111022111986.

The previous prime is 111022111933. The next prime is 111022111997. The reversal of 111022111987 is 789111220111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111022111987 - 2¹⁵ = 111022079219 is a prime.

It is not a weakly prime, because it can be changed into another prime (111022111997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511055993 + 55511055994.

It is an arithmetic number, because the mean of its divisors is an integer number (55511055994).

Almost surely, 2^111022111987 is an apocalyptic number.

111022111987 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022111987 is an equidigital number, since it uses as much as digits as its factorization.

111022111987 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 34.

The spelling of 111022111987 in words is "one hundred eleven billion, twenty-two million, one hundred eleven thousand, nine hundred eighty-seven".