20003212 has 12 divisors (see below), whose sum is σ = 35258440. Its totient is φ = 9929376.

The previous prime is 20003201. The next prime is 20003227. The reversal of 20003212 is 21230002.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17433 + ... + 18544.

Almost surely, 2^20003212 is an apocalyptic number.

It is an amenable number.

20003212 is a deficient number, since it is larger than the sum of its proper divisors (15255228).

20003212 is a wasteful number, since it uses less digits than its factorization.

20003212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36120 (or 36118 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20003212 is about 4472.4950530996. The cubic root of 20003212 is about 271.4562920640.

Adding to 20003212 its reverse (21230002), we get a palindrome (41233214).

The spelling of 20003212 in words is "twenty million, three thousand, two hundred twelve".