65221202212 has 24 divisors (see below), whose sum is σ = 119244791232. Its totient is φ = 31154719200.

The previous prime is 65221202209. The next prime is 65221202239. The reversal of 65221202212 is 21220212256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356214 + ... + 507277.

It is an arithmetic number, because the mean of its divisors is an integer number (4968532968).

Almost surely, 2^65221202212 is an apocalyptic number.

It is an amenable number.

65221202212 is a deficient number, since it is larger than the sum of its proper divisors (54023589020).

65221202212 is a wasteful number, since it uses less digits than its factorization.

65221202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864339 (or 864337 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 65221202212 its reverse (21220212256), we get a palindrome (86441414468).

The spelling of 65221202212 in words is "sixty-five billion, two hundred twenty-one million, two hundred two thousand, two hundred twelve".