111221021010112 has 56 divisors (see below), whose sum is σ = 237781457193056. Its totient is φ = 51311182399488.

The previous prime is 111221021010101. The next prime is 111221021010173. The reversal of 111221021010112 is 211010120122111.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 26141628 + ... + 30096955.

It is an arithmetic number, because the mean of its divisors is an integer number (4246097449876).

Almost surely, 2^{111221021010112} is an apocalyptic number.

It is an amenable number.

111221021010112 is an abundant number, since it is smaller than the sum of its proper divisors (126560436182944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111221021010112 is a wasteful number, since it uses less digits than its factorization.

111221021010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56240985 (or 56240975 counting only the distinct ones).

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

Adding to 111221021010112 its reverse (211010120122111), we get a palindrome (322231141132223).

The spelling of 111221021010112 in words is "one hundred eleven trillion, two hundred twenty-one billion, twenty-one million, ten thousand, one hundred twelve".