213213222222 has 128 divisors (see below), whose sum is σ = 602678845440. Its totient is φ = 48429498240.

The previous prime is 213213222217. The next prime is 213213222269. The reversal of 213213222222 is 222222312312.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 213213222192 and 213213222201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 820098 + ... + 1048325.

It is an arithmetic number, because the mean of its divisors is an integer number (4708428480).

Almost surely, 2^213213222222 is an apocalyptic number.

213213222222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213213222222 is an abundant number, since it is smaller than the sum of its proper divisors (389465623218).

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

213213222222 is a wasteful number, since it uses less digits than its factorization.

213213222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868478.

The product of its digits is 2304, while the sum is 24.

Adding to 213213222222 its reverse (222222312312), we get a palindrome (435435534534).

The spelling of 213213222222 in words is "two hundred thirteen billion, two hundred thirteen million, two hundred twenty-two thousand, two hundred twenty-two".