23221333212 has 192 divisors, whose sum is σ = 70510003200. Its totient is φ = 5771243520.

The previous prime is 23221333199. The next prime is 23221333229. The reversal of 23221333212 is 21233312232.

It is a super-2 number, since 2×23221333212² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3024114 + ... + 3031782.

It is an arithmetic number, because the mean of its divisors is an integer number (367239600).

Almost surely, 2^23221333212 is an apocalyptic number.

23221333212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23221333212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35255001600).

23221333212 is an abundant number, since it is smaller than the sum of its proper divisors (47288669988).

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

23221333212 is a wasteful number, since it uses less digits than its factorization.

23221333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7836 (or 7834 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

Adding to 23221333212 its reverse (21233312232), we get a palindrome (44454645444).

The spelling of 23221333212 in words is "twenty-three billion, two hundred twenty-one million, three hundred thirty-three thousand, two hundred twelve".