63216012 has 12 divisors (see below), whose sum is σ = 147504056. Its totient is φ = 21072000.

The previous prime is 63216011. The next prime is 63216019. The reversal of 63216012 is 21061236.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 63216012.

It is not an unprimeable number, because it can be changed into a prime (63216011) 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, 2633989 + ... + 2634012.

Almost surely, 2^63216012 is an apocalyptic number.

It is an amenable number.

63216012 is an abundant number, since it is smaller than the sum of its proper divisors (84288044).

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

63216012 is a wasteful number, since it uses less digits than its factorization.

63216012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268008 (or 5268006 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 63216012 is about 7950.8497659055. The cubic root of 63216012 is about 398.3599766652.

Adding to 63216012 its reverse (21061236), we get a palindrome (84277248).

The spelling of 63216012 in words is "sixty-three million, two hundred sixteen thousand, twelve".