113522220 has 216 divisors, whose sum is σ = 409067568. Its totient is φ = 25401600.

The previous prime is 113522203. The next prime is 113522221. The reversal of 113522220 is 22225311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 113522193 and 113522202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113522221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 537915 + ... + 538125.

Almost surely, 2^113522220 is an apocalyptic number.

113522220 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 113522220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204533784).

113522220 is an abundant number, since it is smaller than the sum of its proper divisors (295545348).

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

113522220 is a wasteful number, since it uses less digits than its factorization.

113522220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 113522220 is about 10654.6806615684. The cubic root of 113522220 is about 484.2024231266.

Adding to 113522220 its reverse (22225311), we get a palindrome (135747531).

The spelling of 113522220 in words is "one hundred thirteen million, five hundred twenty-two thousand, two hundred twenty".