12133020217 has 2 divisors, whose sum is σ = 12133020218. Its totient is φ = 12133020216.

The previous prime is 12133020187. The next prime is 12133020257. The reversal of 12133020217 is 71202033121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9428604201 + 2704416016 = 97101^2 + 52004^2 .

It is an emirp because it is prime and its reverse (71202033121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12133020217 - 2²⁷ = 11998802489 is a prime.

It is a super-2 number, since 2×12133020217² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12133020257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6066510108 + 6066510109.

It is an arithmetic number, because the mean of its divisors is an integer number (6066510109).

Almost surely, 2^12133020217 is an apocalyptic number.

It is an amenable number.

12133020217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12133020217 is an equidigital number, since it uses as much as digits as its factorization.

12133020217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 12133020217 its reverse (71202033121), we get a palindrome (83335053338).

The spelling of 12133020217 in words is "twelve billion, one hundred thirty-three million, twenty thousand, two hundred seventeen".