212223432 has 16 divisors (see below), whose sum is σ = 530558640. Its totient is φ = 70741136.

The previous prime is 212223409. The next prime is 212223443. The reversal of 212223432 is 234322212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212223399 and 212223408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4421298 + ... + 4421345.

It is an arithmetic number, because the mean of its divisors is an integer number (33159915).

Almost surely, 2^212223432 is an apocalyptic number.

It is an amenable number.

212223432 is an abundant number, since it is smaller than the sum of its proper divisors (318335208).

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

212223432 is a wasteful number, since it uses less digits than its factorization.

212223432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8842652 (or 8842648 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 212223432 is about 14567.8904443986. The cubic root of 212223432 is about 596.4825978758.

Adding to 212223432 its reverse (234322212), we get a palindrome (446545644).

The spelling of 212223432 in words is "two hundred twelve million, two hundred twenty-three thousand, four hundred thirty-two".