12220355 has 24 divisors (see below), whose sum is σ = 17619840. Its totient is φ = 8104320.

The previous prime is 12220333. The next prime is 12220361. The reversal of 12220355 is 55302221.

It is not a de Polignac number, because 12220355 - 2¹⁸ = 11958211 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6791 + ... + 8399.

It is an arithmetic number, because the mean of its divisors is an integer number (734160).

Almost surely, 2^12220355 is an apocalyptic number.

12220355 is a deficient number, since it is larger than the sum of its proper divisors (5399485).

12220355 is a wasteful number, since it uses less digits than its factorization.

12220355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 12220355 is about 3495.7624347201. The cubic root of 12220355 is about 230.3357101340.

Adding to 12220355 its reverse (55302221), we get a palindrome (67522576).

The spelling of 12220355 in words is "twelve million, two hundred twenty thousand, three hundred fifty-five".