11931222 has 8 divisors (see below), whose sum is σ = 23862456. Its totient is φ = 3977072.

The previous prime is 11931203. The next prime is 11931223. The reversal of 11931222 is 22213911.

11931222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

11931222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11931223) 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, 994263 + ... + 994274.

It is an arithmetic number, because the mean of its divisors is an integer number (2982807).

Almost surely, 2^11931222 is an apocalyptic number.

11931222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11931222 is a wasteful number, since it uses less digits than its factorization.

11931222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988542.

The product of its digits is 216, while the sum is 21.

The square root of 11931222 is about 3454.1601005165. The cubic root of 11931222 is about 228.5046148838.

It can be divided in two parts, 1193 and 1222, that added together give a triangular number (2415 = T₆₉).

The spelling of 11931222 in words is "eleven million, nine hundred thirty-one thousand, two hundred twenty-two".