221321000313 has 12 divisors (see below), whose sum is σ = 365355302208. Its totient is φ = 126469143000.

The previous prime is 221321000311. The next prime is 221321000323. The reversal of 221321000313 is 313000123122.

221321000313 is a `hidden beast` number, since 221 + 32 + 100 + 0 + 313 = 666.

It is not a de Polignac number, because 221321000313 - 2¹ = 221321000311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221321000311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1756515813 + ... + 1756515938.

It is an arithmetic number, because the mean of its divisors is an integer number (30446275184).

Almost surely, 2^221321000313 is an apocalyptic number.

It is an amenable number.

221321000313 is a deficient number, since it is larger than the sum of its proper divisors (144034301895).

221321000313 is a wasteful number, since it uses less digits than its factorization.

221321000313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513031764 (or 3513031761 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 221321000313 its reverse (313000123122), we get a palindrome (534321123435).

The spelling of 221321000313 in words is "two hundred twenty-one billion, three hundred twenty-one million, three hundred thirteen", and thus it is an aban number.