213000002112222 has 96 divisors (see below), whose sum is σ = 498331708318080. Its totient is φ = 65362867133760.

The previous prime is 213000002112203. The next prime is 213000002112223. The reversal of 213000002112222 is 222211200000312.

It is a super-2 number, since 2×213000002112222² (a number of 29 digits) contains 22 as substring.

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 = 213000002112195 and 213000002112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213000002112223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4151454693 + ... + 4151505999.

It is an arithmetic number, because the mean of its divisors is an integer number (5190955294980).

Almost surely, 2^{213000002112222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213000002112222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249165854159040).

213000002112222 is an abundant number, since it is smaller than the sum of its proper divisors (285331706205858).

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

213000002112222 is a wasteful number, since it uses less digits than its factorization.

213000002112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98518 (or 98515 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 213000002112222 its reverse (222211200000312), we get a palindrome (435211202112534).

The spelling of 213000002112222 in words is "two hundred thirteen trillion, two million, one hundred twelve thousand, two hundred twenty-two".