571072016221 has 16 divisors (see below), whose sum is σ = 667331891200. Its totient is φ = 478601995248.

The previous prime is 571072016219. The next prime is 571072016261. The reversal of 571072016221 is 122610270175.

It is a cyclic number.

It is not a de Polignac number, because 571072016221 - 2¹ = 571072016219 is a prime.

It is a super-2 number, since 2×571072016221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (571072016261) 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, 4956051 + ... + 5069968.

It is an arithmetic number, because the mean of its divisors is an integer number (41708243200).

Almost surely, 2^571072016221 is an apocalyptic number.

It is an amenable number.

571072016221 is a deficient number, since it is larger than the sum of its proper divisors (96259874979).

571072016221 is a wasteful number, since it uses less digits than its factorization.

571072016221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10026208.

The product of its (nonzero) digits is 11760, while the sum is 34.

Adding to 571072016221 its reverse (122610270175), we get a palindrome (693682286396).

The spelling of 571072016221 in words is "five hundred seventy-one billion, seventy-two million, sixteen thousand, two hundred twenty-one".