71110001221 has 8 divisors (see below), whose sum is σ = 81371842880. Its totient is φ = 60873977088.

The previous prime is 71110001219. The next prime is 71110001231. The reversal of 71110001221 is 12210001117.

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 71110001221 - 2¹ = 71110001219 is a prime.

It is a super-3 number, since 3×71110001221³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71110001195 and 71110001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71110001231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6448476 + ... + 6459493.

It is an arithmetic number, because the mean of its divisors is an integer number (10171480360).

Almost surely, 2^71110001221 is an apocalyptic number.

It is an amenable number.

71110001221 is a deficient number, since it is larger than the sum of its proper divisors (10261841659).

71110001221 is a wasteful number, since it uses less digits than its factorization.

71110001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12908763.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 71110001221 its reverse (12210001117), we get a palindrome (83320002338).

The spelling of 71110001221 in words is "seventy-one billion, one hundred ten million, one thousand, two hundred twenty-one".