221210312000312 has 64 divisors (see below), whose sum is σ = 448911219445920. Its totient is φ = 101802151047168.

The previous prime is 221210312000257. The next prime is 221210312000477. The reversal of 221210312000312 is 213000213012122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47770133 + ... + 52195844.

Almost surely, 2^{221210312000312} is an apocalyptic number.

It is an amenable number.

221210312000312 is an abundant number, since it is smaller than the sum of its proper divisors (227700907445608).

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

221210312000312 is a wasteful number, since it uses less digits than its factorization.

221210312000312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99966360 (or 99966356 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221210312000312 its reverse (213000213012122), we get a palindrome (434210525012434).

The spelling of 221210312000312 in words is "two hundred twenty-one trillion, two hundred ten billion, three hundred twelve million, three hundred twelve", and thus it is an aban number.