9131222 has 16 divisors (see below), whose sum is σ = 14184720. Its totient is φ = 4405632.

The previous prime is 9131219. The next prime is 9131231. The reversal of 9131222 is 2221319.

9131222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9131194 and 9131203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7058 + ... + 8250.

It is an arithmetic number, because the mean of its divisors is an integer number (886545).

Almost surely, 2^9131222 is an apocalyptic number.

9131222 is a deficient number, since it is larger than the sum of its proper divisors (5053498).

9131222 is a wasteful number, since it uses less digits than its factorization.

9131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327.

The product of its digits is 216, while the sum is 20.

The square root of 9131222 is about 3021.7911906682. The cubic root of 9131222 is about 209.0144446416.

Subtracting from 9131222 its reverse (2221319), we obtain a triangular number (6909903 = T₃₇₁₇).

It can be divided in two parts, 91 and 31222, that added together give a palindrome (31313).

The spelling of 9131222 in words is "nine million, one hundred thirty-one thousand, two hundred twenty-two".