221430552664641 has 16 divisors (see below), whose sum is σ = 304134362980800. Its totient is φ = 143219636360640.

The previous prime is 221430552664631. The next prime is 221430552664693. The reversal of 221430552664641 is 146466255034122.

It is not a de Polignac number, because 221430552664641 - 2⁶ = 221430552664577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221430552664621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5760101290 + ... + 5760139731.

It is an arithmetic number, because the mean of its divisors is an integer number (19008397686300).

Almost surely, 2^{221430552664641} is an apocalyptic number.

It is an amenable number.

221430552664641 is a deficient number, since it is larger than the sum of its proper divisors (82703810316159).

221430552664641 is a wasteful number, since it uses less digits than its factorization.

221430552664641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11520241216.

The product of its (nonzero) digits is 8294400, while the sum is 51.

The spelling of 221430552664641 in words is "two hundred twenty-one trillion, four hundred thirty billion, five hundred fifty-two million, six hundred sixty-four thousand, six hundred forty-one".