220533100 has 72 divisors (see below), whose sum is σ = 492156000. Its totient is φ = 85747200.

The previous prime is 220533097. The next prime is 220533107. The reversal of 220533100 is 1335022.

It is a super-2 number, since 2×220533100² = 97269696391220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220533107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 631726 + ... + 632074.

It is an arithmetic number, because the mean of its divisors is an integer number (6835500).

Almost surely, 2^220533100 is an apocalyptic number.

220533100 is a gapful number since it is divisible by the number (20) 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 220533100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246078000).

220533100 is an abundant number, since it is smaller than the sum of its proper divisors (271622900).

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

220533100 is a wasteful number, since it uses less digits than its factorization.

220533100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 220533100 is about 14850.3568980681. The cubic root of 220533100 is about 604.1682900207.

Adding to 220533100 its reverse (1335022), we get a palindrome (221868122).

The spelling of 220533100 in words is "two hundred twenty million, five hundred thirty-three thousand, one hundred".