722111 has 4 divisors (see below), whose sum is σ = 777672. Its totient is φ = 666552.

The previous prime is 722093. The next prime is 722119. The reversal of 722111 is 111227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722111 - 2⁶ = 722047 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27761 + ... + 27786.

It is an arithmetic number, because the mean of its divisors is an integer number (194418).

2⁷²²¹¹¹ is an apocalyptic number.

722111 is a deficient number, since it is larger than the sum of its proper divisors (55561).

722111 is a wasteful number, since it uses less digits than its factorization.

722111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55560.

The product of its digits is 28, while the sum is 14.

The square root of 722111 is about 849.7711456622. The cubic root of 722111 is about 89.7156043276.

Adding to 722111 its reverse (111227), we get a palindrome (833338).

The spelling of 722111 in words is "seven hundred twenty-two thousand, one hundred eleven", and thus it is an iban number.