213223210220 has 24 divisors (see below), whose sum is σ = 453163549104. Its totient is φ = 84261701696.

The previous prime is 213223210163. The next prime is 213223210229. The reversal of 213223210220 is 22012322312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 213223210192 and 213223210201.

It is not an unprimeable number, because it can be changed into a prime (213223210229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64222199 + ... + 64225518.

It is an arithmetic number, because the mean of its divisors is an integer number (18881814546).

Almost surely, 2^213223210220 is an apocalyptic number.

213223210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213223210220 is an abundant number, since it is smaller than the sum of its proper divisors (239940338884).

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

213223210220 is a wasteful number, since it uses less digits than its factorization.

213223210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128447809 (or 128447807 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 213223210220 its reverse (22012322312), we get a palindrome (235235532532).

The spelling of 213223210220 in words is "two hundred thirteen billion, two hundred twenty-three million, two hundred ten thousand, two hundred twenty".