12220535 has 16 divisors (see below), whose sum is σ = 15681600. Its totient is φ = 9110016.

The previous prime is 12220531. The next prime is 12220543. The reversal of 12220535 is 53502221.

It is a cyclic number.

It is not a de Polignac number, because 12220535 - 2² = 12220531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8606 + ... + 9924.

It is an arithmetic number, because the mean of its divisors is an integer number (980100).

Almost surely, 2^12220535 is an apocalyptic number.

12220535 is a deficient number, since it is larger than the sum of its proper divisors (3461065).

12220535 is a wasteful number, since it uses less digits than its factorization.

12220535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450.

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

The square root of 12220535 is about 3495.7881800819. The cubic root of 12220535 is about 230.3368410402.

Adding to 12220535 its reverse (53502221), we get a palindrome (65722756).

The spelling of 12220535 in words is "twelve million, two hundred twenty thousand, five hundred thirty-five".