116021220 has 288 divisors, whose sum is σ = 416747520. Its totient is φ = 23950080.

The previous prime is 116021219. The next prime is 116021221. The reversal of 116021220 is 22120611.

It is an interprime number because it is at equal distance from previous prime (116021219) and next prime (116021221).

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

It is a self number, because there is not a number n which added to its sum of digits gives 116021220.

It is not an unprimeable number, because it can be changed into a prime (116021221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1731627 + ... + 1731693.

It is an arithmetic number, because the mean of its divisors is an integer number (1447040).

Almost surely, 2^116021220 is an apocalyptic number.

116021220 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 116021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208373760).

116021220 is an abundant number, since it is smaller than the sum of its proper divisors (300726300).

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

116021220 is a wasteful number, since it uses less digits than its factorization.

116021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 116021220 is about 10771.3146829902. The cubic root of 116021220 is about 487.7296327763.

Adding to 116021220 its reverse (22120611), we get a palindrome (138141831).

The spelling of 116021220 in words is "one hundred sixteen million, twenty-one thousand, two hundred twenty".