712221 has 8 divisors (see below), whose sum is σ = 955200. Its totient is φ = 472032.

The previous prime is 712219. The next prime is 712237. The reversal of 712221 is 122217.

712221 is a nontrivial binomial coefficient, being equal to C(1194, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 712221 - 2¹ = 712219 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 712221.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 712221.

It is not an unprimeable number, because it can be changed into a prime (712021) 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, 1 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (119400).

2⁷¹²²²¹ is an apocalyptic number.

712221 is the 1193-rd triangular number and also the 597-th hexagonal number.

It is an amenable number.

712221 is a deficient number, since it is larger than the sum of its proper divisors (242979).

712221 is a wasteful number, since it uses less digits than its factorization.

712221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395.

The product of its digits is 56, while the sum is 15.

The square root of 712221 is about 843.9318692880. The cubic root of 712221 is about 89.3041398012.

Adding to 712221 its reverse (122217), we get a palindrome (834438).

The spelling of 712221 in words is "seven hundred twelve thousand, two hundred twenty-one", and thus it is an iban number.