213231000222 has 192 divisors, whose sum is σ = 497752819200. Its totient is φ = 65847168000.

The previous prime is 213231000217. The next prime is 213231000233. The reversal of 213231000222 is 222000132312.

213231000222 is a `hidden beast` number, since 2 + 132 + 310 + 0 + 0 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 213231000195 and 213231000204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 610976904 + ... + 610977252.

It is an arithmetic number, because the mean of its divisors is an integer number (2592462600).

Almost surely, 2^213231000222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213231000222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248876409600).

213231000222 is an abundant number, since it is smaller than the sum of its proper divisors (284521818978).

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

213231000222 is a wasteful number, since it uses less digits than its factorization.

213231000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 213231000222 its reverse (222000132312), we get a palindrome (435231132534).

The spelling of 213231000222 in words is "two hundred thirteen billion, two hundred thirty-one million, two hundred twenty-two", and thus it is an aban number.