23421222 has 96 divisors (see below), whose sum is σ = 59754240. Its totient is φ = 6557760.

The previous prime is 23421221. The next prime is 23421253. The reversal of 23421222 is 22212432.

23421222 is a `hidden beast` number, since 23 + 421 + 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 = 23421195 and 23421204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168429 + ... + 168567.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^23421222 is an apocalyptic number.

23421222 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 23421222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29877120).

23421222 is an abundant number, since it is smaller than the sum of its proper divisors (36333018).

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

23421222 is a wasteful number, since it uses less digits than its factorization.

23421222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 215 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 23421222 is about 4839.5477061395. The cubic root of 23421222 is about 286.1122922864.

Adding to 23421222 its reverse (22212432), we get a palindrome (45633654).

The spelling of 23421222 in words is "twenty-three million, four hundred twenty-one thousand, two hundred twenty-two".