12036473221 has 2 divisors, whose sum is σ = 12036473222. Its totient is φ = 12036473220.

The previous prime is 12036473203. The next prime is 12036473233. The reversal of 12036473221 is 12237463021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11903901025 + 132572196 = 109105^2 + 11514^2 .

It is a cyclic number.

It is not a de Polignac number, because 12036473221 - 2⁹ = 12036472709 is a prime.

It is a super-2 number, since 2×12036473221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12036473291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6018236610 + 6018236611.

It is an arithmetic number, because the mean of its divisors is an integer number (6018236611).

Almost surely, 2^12036473221 is an apocalyptic number.

It is an amenable number.

12036473221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12036473221 is an equidigital number, since it uses as much as digits as its factorization.

12036473221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 12036473221 in words is "twelve billion, thirty-six million, four hundred seventy-three thousand, two hundred twenty-one".