113221223220 has 192 divisors, whose sum is σ = 374165116416. Its totient is φ = 25039964160.

The previous prime is 113221223191. The next prime is 113221223251. The reversal of 113221223220 is 22322122311.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 2792614 + ... + 2832866.

It is an arithmetic number, because the mean of its divisors is an integer number (1948776648).

Almost surely, 2^113221223220 is an apocalyptic number.

113221223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113221223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187082558208).

113221223220 is an abundant number, since it is smaller than the sum of its proper divisors (260943893196).

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

113221223220 is a wasteful number, since it uses less digits than its factorization.

113221223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40490 (or 40488 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 113221223220 its reverse (22322122311), we get a palindrome (135543345531).

The spelling of 113221223220 in words is "one hundred thirteen billion, two hundred twenty-one million, two hundred twenty-three thousand, two hundred twenty".