111200111020 has 12 divisors (see below), whose sum is σ = 233520233184. Its totient is φ = 44480044400.

The previous prime is 111200110993. The next prime is 111200111047. The reversal of 111200111020 is 20111002111.

It is an interprime number because it is at equal distance from previous prime (111200110993) and next prime (111200111047).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111200110988 and 111200111006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780002756 + ... + 2780002795.

It is an arithmetic number, because the mean of its divisors is an integer number (19460019432).

Almost surely, 2^111200111020 is an apocalyptic number.

111200111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200111020 is an abundant number, since it is smaller than the sum of its proper divisors (122320122164).

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

111200111020 is a wasteful number, since it uses less digits than its factorization.

111200111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560005560 (or 5560005558 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111200111020 its reverse (20111002111), we get a palindrome (131311113131).

The spelling of 111200111020 in words is "one hundred eleven billion, two hundred million, one hundred eleven thousand, twenty".