12212199 has 6 divisors (see below), whose sum is σ = 17639856. Its totient is φ = 8141460.

The previous prime is 12212197. The next prime is 12212201. The reversal of 12212199 is 99121221.

It is an interprime number because it is at equal distance from previous prime (12212197) and next prime (12212201).

It is not a de Polignac number, because 12212199 - 2¹ = 12212197 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678447 + ... + 678464.

It is an arithmetic number, because the mean of its divisors is an integer number (2939976).

Almost surely, 2^12212199 is an apocalyptic number.

12212199 is a deficient number, since it is larger than the sum of its proper divisors (5427657).

12212199 is a wasteful number, since it uses less digits than its factorization.

12212199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356917 (or 1356914 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 12212199 is about 3494.5956847681. The cubic root of 12212199 is about 230.2844558635.

It can be divided in two parts, 122 and 12199, that added together give a palindrome (12321).

The spelling of 12212199 in words is "twelve million, two hundred twelve thousand, one hundred ninety-nine".