111221310102 has 64 divisors (see below), whose sum is σ = 269222413824. Its totient is φ = 29902901760.

The previous prime is 111221310077. The next prime is 111221310199. The reversal of 111221310102 is 201013122111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5517013 + ... + 5537135.

It is an arithmetic number, because the mean of its divisors is an integer number (4206600216).

Almost surely, 2^111221310102 is an apocalyptic number.

111221310102 is an abundant number, since it is smaller than the sum of its proper divisors (158001103722).

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

111221310102 is a wasteful number, since it uses less digits than its factorization.

111221310102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27893.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111221310102 its reverse (201013122111), we get a palindrome (312234432213).

The spelling of 111221310102 in words is "one hundred eleven billion, two hundred twenty-one million, three hundred ten thousand, one hundred two".