65213212 has 12 divisors (see below), whose sum is σ = 117804736. Its totient is φ = 31554720.

The previous prime is 65213201. The next prime is 65213221. The reversal of 65213212 is 21231256.

65213212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262833 + ... + 263080.

Almost surely, 2^65213212 is an apocalyptic number.

65213212 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

65213212 is a deficient number, since it is larger than the sum of its proper divisors (52591524).

65213212 is a wasteful number, since it uses less digits than its factorization.

65213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525948 (or 525946 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 65213212 is about 8075.4697696171. The cubic root of 65213212 is about 402.5117201428.

Adding to 65213212 its reverse (21231256), we get a palindrome (86444468).

The spelling of 65213212 in words is "sixty-five million, two hundred thirteen thousand, two hundred twelve".