111220313031102 has 256 divisors, whose sum is σ = 257330272951296. Its totient is φ = 31743207936000.

The previous prime is 111220313031059. The next prime is 111220313031151. The reversal of 111220313031102 is 201130313022111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11906676952 + ... + 11906686292.

It is an arithmetic number, because the mean of its divisors is an integer number (1005196378716).

Almost surely, 2^{111220313031102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111220313031102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128665136475648).

111220313031102 is an abundant number, since it is smaller than the sum of its proper divisors (146109959920194).

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

111220313031102 is a wasteful number, since it uses less digits than its factorization.

111220313031102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 111220313031102 its reverse (201130313022111), we get a palindrome (312350626053213).

The spelling of 111220313031102 in words is "one hundred eleven trillion, two hundred twenty billion, three hundred thirteen million, thirty-one thousand, one hundred two".