111211200121122 has 48 divisors (see below), whose sum is σ = 241560012874752. Its totient is φ = 36977836392000.

The previous prime is 111211200121081. The next prime is 111211200121181. The reversal of 111211200121122 is 221121002112111.

It is a happy number.

111211200121122 is a `hidden beast` number, since 1 + 11 + 211 + 200 + 121 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111211200121095 and 111211200121104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6785103 + ... + 16384749.

It is an arithmetic number, because the mean of its divisors is an integer number (5032500268224).

Almost surely, 2^{111211200121122} is an apocalyptic number.

111211200121122 is an abundant number, since it is smaller than the sum of its proper divisors (130348812753630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111211200121122 is a wasteful number, since it uses less digits than its factorization.

111211200121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9601263 (or 9601260 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111211200121122 its reverse (221121002112111), we get a palindrome (332332202233233).

The spelling of 111211200121122 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred million, one hundred twenty-one thousand, one hundred twenty-two".