221321312331102 has 96 divisors (see below), whose sum is σ = 502059346588800. Its totient is φ = 70402194104256.

The previous prime is 221321312331037. The next prime is 221321312331149. The reversal of 221321312331102 is 201133213123122.

221321312331102 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 2 + 1 + 312 + 331 + 10 + 2 = 666.

221321312331102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221321312331102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7423077 + ... + 22310192.

It is an arithmetic number, because the mean of its divisors is an integer number (5229784860300).

Almost surely, 2^{221321312331102} is an apocalyptic number.

221321312331102 is an abundant number, since it is smaller than the sum of its proper divisors (280738034257698).

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

221321312331102 is a wasteful number, since it uses less digits than its factorization.

221321312331102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29733542 (or 29733539 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 221321312331102 its reverse (201133213123122), we get a palindrome (422454525454224).

The spelling of 221321312331102 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, three hundred twelve million, three hundred thirty-one thousand, one hundred two".