221312330010312 has 32 divisors (see below), whose sum is σ = 572359474166400. Its totient is φ = 71226956784704.

The previous prime is 221312330010307. The next prime is 221312330010353. The reversal of 221312330010312 is 213010033213122.

It is a super-3 number, since 3×221312330010312³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 158988742128 + ... + 158988743519.

It is an arithmetic number, because the mean of its divisors is an integer number (17886233567700).

Almost surely, 2^{221312330010312} is an apocalyptic number.

It is an amenable number.

221312330010312 is an abundant number, since it is smaller than the sum of its proper divisors (351047144156088).

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

221312330010312 is a wasteful number, since it uses less digits than its factorization.

221312330010312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317977485685 (or 317977485681 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 221312330010312 its reverse (213010033213122), we get a palindrome (434322363223434).

The spelling of 221312330010312 in words is "two hundred twenty-one trillion, three hundred twelve billion, three hundred thirty million, ten thousand, three hundred twelve".