223212121332 has 24 divisors (see below), whose sum is σ = 534904724256. Its totient is φ = 72393120288.

The previous prime is 223212121273. The next prime is 223212121351. The reversal of 223212121332 is 233121212322.

223212121332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223212121332³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251364558 + ... + 251365445.

It is an arithmetic number, because the mean of its divisors is an integer number (22287696844).

Almost surely, 2^223212121332 is an apocalyptic number.

It is an amenable number.

223212121332 is an abundant number, since it is smaller than the sum of its proper divisors (311692602924).

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

223212121332 is a wasteful number, since it uses less digits than its factorization.

223212121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502730047 (or 502730045 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 223212121332 its reverse (233121212322), we get a palindrome (456333333654).

The spelling of 223212121332 in words is "two hundred twenty-three billion, two hundred twelve million, one hundred twenty-one thousand, three hundred thirty-two".