111102200020 has 24 divisors (see below), whose sum is σ = 266645280384. Its totient is φ = 38092182816.

The previous prime is 111102200003. The next prime is 111102200023. The reversal of 111102200020 is 20002201111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102200023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396793432 + ... + 396793711.

It is an arithmetic number, because the mean of its divisors is an integer number (11110220016).

Almost surely, 2^111102200020 is an apocalyptic number.

111102200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111102200020 is an abundant number, since it is smaller than the sum of its proper divisors (155543080364).

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

111102200020 is a wasteful number, since it uses less digits than its factorization.

111102200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793587159 (or 793587157 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111102200020 its reverse (20002201111), we get a palindrome (131104401131).

The spelling of 111102200020 in words is "one hundred eleven billion, one hundred two million, two hundred thousand, twenty".