111211122099999 has 16 divisors (see below), whose sum is σ = 148431772022400. Its totient is φ = 74065614792096.

The previous prime is 111211122099997. The next prime is 111211122100069. The reversal of 111211122099999 is 999990221112111.

It is not a de Polignac number, because 111211122099999 - 2¹ = 111211122099997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211122099997) 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, 97467732 + ... + 98602134.

It is an arithmetic number, because the mean of its divisors is an integer number (9276985751400).

Almost surely, 2^{111211122099999} is an apocalyptic number.

111211122099999 is a deficient number, since it is larger than the sum of its proper divisors (37220649922401).

111211122099999 is a wasteful number, since it uses less digits than its factorization.

111211122099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167494.

The product of its (nonzero) digits is 472392, while the sum is 57.

The spelling of 111211122099999 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred twenty-two million, ninety-nine thousand, nine hundred ninety-nine".