111222220020 has 48 divisors (see below), whose sum is σ = 312546530688. Its totient is φ = 29552181120.

The previous prime is 111222220013. The next prime is 111222220049. The reversal of 111222220020 is 20022222111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3329416 + ... + 3362655.

It is an arithmetic number, because the mean of its divisors is an integer number (6511386056).

Almost surely, 2^111222220020 is an apocalyptic number.

111222220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222220020 is an abundant number, since it is smaller than the sum of its proper divisors (201324310668).

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

111222220020 is a wasteful number, since it uses less digits than its factorization.

111222220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692360 (or 6692358 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 111222220020 its reverse (20022222111), we get a palindrome (131244442131).

The spelling of 111222220020 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, twenty".