9911222 has 4 divisors (see below), whose sum is σ = 14866836. Its totient is φ = 4955610.

The previous prime is 9911201. The next prime is 9911249. The reversal of 9911222 is 2221199.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221199 = 967 ⋅2297.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9911191 and 9911200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2477804 + ... + 2477807.

It is an arithmetic number, because the mean of its divisors is an integer number (3716709).

Almost surely, 2^9911222 is an apocalyptic number.

9911222 is a deficient number, since it is larger than the sum of its proper divisors (4955614).

9911222 is a wasteful number, since it uses less digits than its factorization.

9911222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955613.

The product of its digits is 648, while the sum is 26.

The square root of 9911222 is about 3148.2093323030. The cubic root of 9911222 is about 214.8040182717.

The spelling of 9911222 in words is "nine million, nine hundred eleven thousand, two hundred twenty-two".