20332212 has 12 divisors (see below), whose sum is σ = 47441856. Its totient is φ = 6777400.

The previous prime is 20332211. The next prime is 20332217. The reversal of 20332212 is 21223302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20332191 and 20332200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847164 + ... + 847187.

It is an arithmetic number, because the mean of its divisors is an integer number (3953488).

Almost surely, 2^20332212 is an apocalyptic number.

It is an amenable number.

20332212 is an abundant number, since it is smaller than the sum of its proper divisors (27109644).

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

20332212 is a wasteful number, since it uses less digits than its factorization.

20332212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694358 (or 1694356 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20332212 is about 4509.1254140909. The cubic root of 20332212 is about 272.9364528928.

Adding to 20332212 its reverse (21223302), we get a palindrome (41555514).

The spelling of 20332212 in words is "twenty million, three hundred thirty-two thousand, two hundred twelve".