12220147 has 2 divisors, whose sum is σ = 12220148. Its totient is φ = 12220146.

The previous prime is 12220129. The next prime is 12220171. The reversal of 12220147 is 74102221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12220147 - 2¹¹ = 12218099 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110073 + 6110074.

It is an arithmetic number, because the mean of its divisors is an integer number (6110074).

Almost surely, 2^12220147 is an apocalyptic number.

12220147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220147 is an equidigital number, since it uses as much as digits as its factorization.

12220147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12220147 is about 3495.7326842881. The cubic root of 12220147 is about 230.3344032953.

Adding to 12220147 its reverse (74102221), we get a palindrome (86322368).

The spelling of 12220147 in words is "twelve million, two hundred twenty thousand, one hundred forty-seven".