111201121012 has 12 divisors (see below), whose sum is σ = 197342834976. Its totient is φ = 54817453880.

The previous prime is 111201120967. The next prime is 111201121019. The reversal of 111201121012 is 210121102111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111201120983 and 111201121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201121019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195776338 + ... + 195776905.

It is an arithmetic number, because the mean of its divisors is an integer number (16445236248).

Almost surely, 2^111201121012 is an apocalyptic number.

It is an amenable number.

111201121012 is a deficient number, since it is larger than the sum of its proper divisors (86141713964).

111201121012 is a wasteful number, since it uses less digits than its factorization.

111201121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391553318 (or 391553316 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111201121012 its reverse (210121102111), we get a palindrome (321322223123).

The spelling of 111201121012 in words is "one hundred eleven billion, two hundred one million, one hundred twenty-one thousand, twelve".