111100121012 has 24 divisors (see below), whose sum is σ = 214812513216. Its totient is φ = 50009260928.

The previous prime is 111100120973. The next prime is 111100121021. The reversal of 111100121012 is 210121001111.

It is a junction number, because it is equal to n+sod(n) for n = 111100120984 and 111100121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35516378 + ... + 35519505.

It is an arithmetic number, because the mean of its divisors is an integer number (8950521384).

Almost surely, 2^111100121012 is an apocalyptic number.

It is an amenable number.

111100121012 is a deficient number, since it is larger than the sum of its proper divisors (103712392204).

111100121012 is a wasteful number, since it uses less digits than its factorization.

111100121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71035927 (or 71035925 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111100121012 its reverse (210121001111), we get a palindrome (321221122123).

The spelling of 111100121012 in words is "one hundred eleven billion, one hundred million, one hundred twenty-one thousand, twelve".