221245510513 has 8 divisors (see below), whose sum is σ = 225003420000. Its totient is φ = 217487867328.

The previous prime is 221245510477. The next prime is 221245510517. The reversal of 221245510513 is 315015542122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221245510513 - 2⁹ = 221245510001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221245510517) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2343145 + ... + 2435737.

It is an arithmetic number, because the mean of its divisors is an integer number (28125427500).

Almost surely, 2^221245510513 is an apocalyptic number.

It is an amenable number.

221245510513 is a deficient number, since it is larger than the sum of its proper divisors (3757909487).

221245510513 is an equidigital number, since it uses as much as digits as its factorization.

221245510513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133151.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 221245510513 in words is "two hundred twenty-one billion, two hundred forty-five million, five hundred ten thousand, five hundred thirteen".