12227555 has 8 divisors (see below), whose sum is σ = 14748000. Its totient is φ = 9732096.

The previous prime is 12227533. The next prime is 12227557. The reversal of 12227555 is 55572221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12227555 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12227557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5150 + ... + 7139.

It is an arithmetic number, because the mean of its divisors is an integer number (1843500).

Almost surely, 2^12227555 is an apocalyptic number.

12227555 is a deficient number, since it is larger than the sum of its proper divisors (2520445).

12227555 is a wasteful number, since it uses less digits than its factorization.

12227555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12493.

The product of its digits is 7000, while the sum is 29.

The square root of 12227555 is about 3496.7921013409. The cubic root of 12227555 is about 230.3809377213.

Adding to 12227555 its reverse (55572221), we get a palindrome (67799776).

The spelling of 12227555 in words is "twelve million, two hundred twenty-seven thousand, five hundred fifty-five".