12212196 has 12 divisors (see below), whose sum is σ = 28495152. Its totient is φ = 4070728.

The previous prime is 12212191. The next prime is 12212197. The reversal of 12212196 is 69121221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12212196² = 298275462284832, which contains 22 as substring.

It is a plaindrome in base 15.

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 3 ways as a sum of consecutive naturals, for example, 508830 + ... + 508853.

It is an arithmetic number, because the mean of its divisors is an integer number (2374596).

Almost surely, 2^12212196 is an apocalyptic number.

It is an amenable number.

12212196 is an abundant number, since it is smaller than the sum of its proper divisors (16282956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12212196 is a wasteful number, since it uses less digits than its factorization.

12212196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017690 (or 1017688 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 12212196 is about 3494.5952555339. The cubic root of 12212196 is about 230.2844370066.

The spelling of 12212196 in words is "twelve million, two hundred twelve thousand, one hundred ninety-six".