221413301464665 has 32 divisors (see below), whose sum is σ = 379227064089600. Its totient is φ = 109975848569280.

The previous prime is 221413301464643. The next prime is 221413301464699. The reversal of 221413301464665 is 566464103314122.

It is not a de Polignac number, because 221413301464665 - 2⁹ = 221413301464153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6583786381 + ... + 6583820010.

It is an arithmetic number, because the mean of its divisors is an integer number (11850845752800).

Almost surely, 2^{221413301464665} is an apocalyptic number.

It is an amenable number.

221413301464665 is a deficient number, since it is larger than the sum of its proper divisors (157813762624935).

221413301464665 is a wasteful number, since it uses less digits than its factorization.

221413301464665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13167606477.

The product of its (nonzero) digits is 2488320, while the sum is 48.

Adding to 221413301464665 its reverse (566464103314122), we get a palindrome (787877404778787).

The spelling of 221413301464665 in words is "two hundred twenty-one trillion, four hundred thirteen billion, three hundred one million, four hundred sixty-four thousand, six hundred sixty-five".