11722 has 4 divisors (see below), whose sum is σ = 17586. Its totient is φ = 5860.

The previous prime is 11719. The next prime is 11731. The reversal of 11722 is 22711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22711 = 13 ⋅1747.

It can be written as a sum of positive squares in only one way, i.e., 10201 + 1521 = 101^2 + 39^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2929 + ... + 2932.

2¹¹⁷²² is an apocalyptic number.

11722 is a deficient number, since it is larger than the sum of its proper divisors (5864).

11722 is an equidigital number, since it uses as much as digits as its factorization.

11722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863.

The product of its digits is 28, while the sum is 13.

The square root of 11722 is about 108.2681855394. The cubic root of 11722 is about 22.7161070001.

The spelling of 11722 in words is "eleven thousand, seven hundred twenty-two", and thus it is an iban number.