213124122222 has 96 divisors (see below), whose sum is σ = 476889396480. Its totient is φ = 63431491200.

The previous prime is 213124122191. The next prime is 213124122229. The reversal of 213124122222 is 222221421312.

It is a junction number, because it is equal to n+sod(n) for n = 213124122192 and 213124122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213124122229) 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, 92220447 + ... + 92222757.

It is an arithmetic number, because the mean of its divisors is an integer number (4967597880).

Almost surely, 2^213124122222 is an apocalyptic number.

213124122222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 213124122222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238444698240).

213124122222 is an abundant number, since it is smaller than the sum of its proper divisors (263765274258).

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

213124122222 is a wasteful number, since it uses less digits than its factorization.

213124122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550 (or 4539 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

Adding to 213124122222 its reverse (222221421312), we get a palindrome (435345543534).

The spelling of 213124122222 in words is "two hundred thirteen billion, one hundred twenty-four million, one hundred twenty-two thousand, two hundred twenty-two".