111222111121012 has 12 divisors (see below), whose sum is σ = 194639010434176. Its totient is φ = 55610965282680.

The previous prime is 111222111121003. The next prime is 111222111121031. The reversal of 111222111121012 is 210121111222111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19758564 + ... + 24755707.

Almost surely, 2^{111222111121012} is an apocalyptic number.

It is an amenable number.

111222111121012 is a deficient number, since it is larger than the sum of its proper divisors (83416899313164).

111222111121012 is a wasteful number, since it uses less digits than its factorization.

111222111121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45138918 (or 45138916 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111222111121012 its reverse (210121111222111), we get a palindrome (321343222343123).

The spelling of 111222111121012 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, twelve".