12220197 has 16 divisors (see below), whose sum is σ = 18043392. Its totient is φ = 7294320.

The previous prime is 12220193. The next prime is 12220217. The reversal of 12220197 is 79102221.

It is not a de Polignac number, because 12220197 - 2² = 12220193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220193) 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, 553 + ... + 4974.

It is an arithmetic number, because the mean of its divisors is an integer number (1127712).

Almost surely, 2^12220197 is an apocalyptic number.

It is an amenable number.

12220197 is a deficient number, since it is larger than the sum of its proper divisors (5823195).

12220197 is a wasteful number, since it uses less digits than its factorization.

12220197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12220197 is about 3495.7398358574. The cubic root of 12220197 is about 230.3347174406.

The spelling of 12220197 in words is "twelve million, two hundred twenty thousand, one hundred ninety-seven".