111221203012 has 24 divisors (see below), whose sum is σ = 195217386336. Its totient is φ = 55445035968.

The previous prime is 111221202943. The next prime is 111221203031. The reversal of 111221203012 is 210302122111.

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, 1965783 + ... + 2021569.

It is an arithmetic number, because the mean of its divisors is an integer number (8134057764).

Almost surely, 2^111221203012 is an apocalyptic number.

It is an amenable number.

111221203012 is a deficient number, since it is larger than the sum of its proper divisors (83996183324).

111221203012 is a wasteful number, since it uses less digits than its factorization.

111221203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57267 (or 57265 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111221203012 its reverse (210302122111), we get a palindrome (321523325123).

The spelling of 111221203012 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred three thousand, twelve".