12222554 has 8 divisors (see below), whose sum is σ = 18353460. Its totient is φ = 6104736.

The previous prime is 12222547. The next prime is 12222557. The reversal of 12222554 is 45522221.

It can be written as a sum of positive squares in 2 ways, for example, as 10413529 + 1809025 = 3227^2 + 1345^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12222557) 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, 449 + ... + 4964.

Almost surely, 2^12222554 is an apocalyptic number.

12222554 is a deficient number, since it is larger than the sum of its proper divisors (6130906).

12222554 is a wasteful number, since it uses less digits than its factorization.

12222554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544.

The product of its digits is 1600, while the sum is 23.

The square root of 12222554 is about 3496.0769442334. The cubic root of 12222554 is about 230.3495252768.

Adding to 12222554 its reverse (45522221), we get a palindrome (57744775).

The spelling of 12222554 in words is "twelve million, two hundred twenty-two thousand, five hundred fifty-four".