111102221999 has 2 divisors, whose sum is σ = 111102222000. Its totient is φ = 111102221998.

The previous prime is 111102221983. The next prime is 111102222037. The reversal of 111102221999 is 999122201111.

It is an a-pointer prime, because the next prime (111102222037) can be obtained adding 111102221999 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111102221999 - 2⁴ = 111102221983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111102221299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55551110999 + 55551111000.

It is an arithmetic number, because the mean of its divisors is an integer number (55551111000).

Almost surely, 2^111102221999 is an apocalyptic number.

111102221999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111102221999 is an equidigital number, since it uses as much as digits as its factorization.

111102221999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 111102221999 in words is "one hundred eleven billion, one hundred two million, two hundred twenty-one thousand, nine hundred ninety-nine".