12212755 has 8 divisors (see below), whose sum is σ = 14676912. Its totient is φ = 9755808.

The previous prime is 12212743. The next prime is 12212771. The reversal of 12212755 is 55721221.

12212755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12212755 - 2¹⁷ = 12081683 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3189 + ... + 5881.

It is an arithmetic number, because the mean of its divisors is an integer number (1834614).

Almost surely, 2^12212755 is an apocalyptic number.

12212755 is a deficient number, since it is larger than the sum of its proper divisors (2464157).

12212755 is an equidigital number, since it uses as much as digits as its factorization.

12212755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605.

The product of its digits is 1400, while the sum is 25.

The square root of 12212755 is about 3494.6752352687. The cubic root of 12212755 is about 230.2879506262.

Adding to 12212755 its reverse (55721221), we get a palindrome (67933976).

The spelling of 12212755 in words is "twelve million, two hundred twelve thousand, seven hundred fifty-five".