111112101020 has 12 divisors (see below), whose sum is σ = 233335412184. Its totient is φ = 44444840400.

The previous prime is 111112101019. The next prime is 111112101029. The reversal of 111112101020 is 20101211111.

It is a junction number, because it is equal to n+sod(n) for n = 111112100992 and 111112101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112101029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777802506 + ... + 2777802545.

It is an arithmetic number, because the mean of its divisors is an integer number (19444617682).

Almost surely, 2^111112101020 is an apocalyptic number.

111112101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112101020 is an abundant number, since it is smaller than the sum of its proper divisors (122223311164).

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

111112101020 is a wasteful number, since it uses less digits than its factorization.

111112101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555605060 (or 5555605058 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111112101020 its reverse (20101211111), we get a palindrome (131213312131).

The spelling of 111112101020 in words is "one hundred eleven billion, one hundred twelve million, one hundred one thousand, twenty".