11222642 has 4 divisors (see below), whose sum is σ = 16833966. Its totient is φ = 5611320.

The previous prime is 11222621. The next prime is 11222671. The reversal of 11222642 is 24622211.

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: 24622211 = 151 ⋅163061.

It can be written as a sum of positive squares in only one way, i.e., 10896601 + 326041 = 3301^2 + 571^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2805659 + ... + 2805662.

Almost surely, 2^11222642 is an apocalyptic number.

11222642 is a deficient number, since it is larger than the sum of its proper divisors (5611324).

11222642 is an equidigital number, since it uses as much as digits as its factorization.

11222642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611323.

The product of its digits is 384, while the sum is 20.

The square root of 11222642 is about 3350.0211939628. The cubic root of 11222642 is about 223.8884569014. Note that the first 3 decimals are identical.

Adding to 11222642 its reverse (24622211), we get a palindrome (35844853).

The spelling of 11222642 in words is "eleven million, two hundred twenty-two thousand, six hundred forty-two".