213132220 has 48 divisors (see below), whose sum is σ = 516616128. Its totient is φ = 72345600.

The previous prime is 213132217. The next prime is 213132221. The reversal of 213132220 is 22231312.

213132220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213132194 and 213132203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213132221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6604 + ... + 21676.

It is an arithmetic number, because the mean of its divisors is an integer number (10762836).

Almost surely, 2^213132220 is an apocalyptic number.

213132220 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 213132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258308064).

213132220 is an abundant number, since it is smaller than the sum of its proper divisors (303483908).

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

213132220 is a wasteful number, since it uses less digits than its factorization.

213132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15190 (or 15188 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213132220 is about 14599.0485991382. The cubic root of 213132220 is about 597.3328092056.

Adding to 213132220 its reverse (22231312), we get a palindrome (235363532).

The spelling of 213132220 in words is "two hundred thirteen million, one hundred thirty-two thousand, two hundred twenty".