213223022220 has 96 divisors (see below), whose sum is σ = 645322567680. Its totient is φ = 52291941120.

The previous prime is 213223022191. The next prime is 213223022267. The reversal of 213223022220 is 22220322312.

213223022220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213223022220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292980 + ... + 715739.

It is an arithmetic number, because the mean of its divisors is an integer number (6722110080).

Almost surely, 2^213223022220 is an apocalyptic number.

213223022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213223022220 is an abundant number, since it is smaller than the sum of its proper divisors (432099545460).

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

213223022220 is a wasteful number, since it uses less digits than its factorization.

213223022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009015 (or 1009013 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 213223022220 its reverse (22220322312), we get a palindrome (235443344532).

The spelling of 213223022220 in words is "two hundred thirteen billion, two hundred twenty-three million, twenty-two thousand, two hundred twenty".