501466032013221 has 24 divisors (see below), whose sum is σ = 790258221604800. Its totient is φ = 303892144713600.

The previous prime is 501466032013217. The next prime is 501466032013259. The reversal of 501466032013221 is 122310230664105.

501466032013221 is a `hidden beast` number, since 5 + 0 + 1 + 4 + 6 + 6 + 0 + 320 + 1 + 322 + 1 = 666.

It is not a de Polignac number, because 501466032013221 - 2² = 501466032013217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501466032013291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221053860 + ... + 223310861.

It is an arithmetic number, because the mean of its divisors is an integer number (32927425900200).

Almost surely, 2^{501466032013221} is an apocalyptic number.

It is an amenable number.

501466032013221 is a deficient number, since it is larger than the sum of its proper divisors (288792189591579).

501466032013221 is a wasteful number, since it uses less digits than its factorization.

501466032013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444376137 (or 444376134 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 501466032013221 its reverse (122310230664105), we get a palindrome (623776262677326).

The spelling of 501466032013221 in words is "five hundred one trillion, four hundred sixty-six billion, thirty-two million, thirteen thousand, two hundred twenty-one".