111222011109999 has 16 divisors (see below), whose sum is σ = 157559956721280. Its totient is φ = 69588980877600.

The previous prime is 111222011109983. The next prime is 111222011110051. The reversal of 111222011109999 is 999901110222111.

It is not a de Polignac number, because 111222011109999 - 2⁴ = 111222011109983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222011109929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9118046952 + ... + 9118059149.

It is an arithmetic number, because the mean of its divisors is an integer number (9847497295080).

Almost surely, 2^{111222011109999} is an apocalyptic number.

111222011109999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

111222011109999 is a deficient number, since it is larger than the sum of its proper divisors (46337945611281).

111222011109999 is a wasteful number, since it uses less digits than its factorization.

111222011109999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18236106230.

The product of its (nonzero) digits is 52488, while the sum is 48.

The spelling of 111222011109999 in words is "one hundred eleven trillion, two hundred twenty-two billion, eleven million, one hundred nine thousand, nine hundred ninety-nine".