12221632249 has 2 divisors, whose sum is σ = 12221632250. Its totient is φ = 12221632248.

The previous prime is 12221632201. The next prime is 12221632307. The reversal of 12221632249 is 94223612221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8129727225 + 4091905024 = 90165^2 + 63968^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221632249 - 2⁷ = 12221632121 is a prime.

It is a super-4 number, since 4×12221632249⁴ (a number of 41 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (12221632849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110816124 + 6110816125.

It is an arithmetic number, because the mean of its divisors is an integer number (6110816125).

Almost surely, 2^12221632249 is an apocalyptic number.

It is an amenable number.

12221632249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221632249 is an equidigital number, since it uses as much as digits as its factorization.

12221632249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The spelling of 12221632249 in words is "twelve billion, two hundred twenty-one million, six hundred thirty-two thousand, two hundred forty-nine".