111120111102 has 128 divisors (see below), whose sum is σ = 306457740288. Its totient is φ = 25922073600.

The previous prime is 111120111083. The next prime is 111120111121. The reversal of 111120111102 is 201111021111.

It is an interprime number because it is at equal distance from previous prime (111120111083) and next prime (111120111121).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27799 + ... + 472242.

It is an arithmetic number, because the mean of its divisors is an integer number (2394201096).

Almost surely, 2^111120111102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111120111102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153228870144).

111120111102 is an abundant number, since it is smaller than the sum of its proper divisors (195337629186).

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

111120111102 is a wasteful number, since it uses less digits than its factorization.

111120111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500114.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111120111102 its reverse (201111021111), we get a palindrome (312231132213).

It can be divided in two parts, 111120 and 111102, that added together give a palindrome (222222).

The spelling of 111120111102 in words is "one hundred eleven billion, one hundred twenty million, one hundred eleven thousand, one hundred two".