111221221010012 has 12 divisors (see below), whose sum is σ = 196982162512296. Its totient is φ = 54940603149360.

The previous prime is 111221221009979. The next prime is 111221221010111. The reversal of 111221221010012 is 210010122122111.

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, 167501838539 + ... + 167501839202.

It is an arithmetic number, because the mean of its divisors is an integer number (16415180209358).

Almost surely, 2^{111221221010012} is an apocalyptic number.

It is an amenable number.

111221221010012 is a deficient number, since it is larger than the sum of its proper divisors (85760941502284).

111221221010012 is a wasteful number, since it uses less digits than its factorization.

111221221010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335003677828 (or 335003677826 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111221221010012 its reverse (210010122122111), we get a palindrome (321231343132123).

The spelling of 111221221010012 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, ten thousand, twelve".