11223971 has 4 divisors (see below), whose sum is σ = 12244344. Its totient is φ = 10203600.

The previous prime is 11223941. The next prime is 11223973. The reversal of 11223971 is 17932211.

11223971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11223971 - 2¹⁸ = 10961827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11223971.

It is not an unprimeable number, because it can be changed into a prime (11223973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510170 + ... + 510191.

It is an arithmetic number, because the mean of its divisors is an integer number (3061086).

Almost surely, 2^11223971 is an apocalyptic number.

11223971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11223971 is a deficient number, since it is larger than the sum of its proper divisors (1020373).

11223971 is a wasteful number, since it uses less digits than its factorization.

11223971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020372.

The product of its digits is 756, while the sum is 26.

The square root of 11223971 is about 3350.2195450448. The cubic root of 11223971 is about 223.8972942742.

The spelling of 11223971 in words is "eleven million, two hundred twenty-three thousand, nine hundred seventy-one".