12011221210229 has 2 divisors, whose sum is σ = 12011221210230. Its totient is φ = 12011221210228.

The previous prime is 12011221210181. The next prime is 12011221210291. The reversal of 12011221210229 is 92201212211021.

12011221210229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6827507702500 + 5183713507729 = 2612950^2 + 2276777^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011221210229 - 2²⁰ = 12011220161653 is a prime.

It is a super-2 number, since 2×12011221210229² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12011221210198 and 12011221210207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011223210229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005610605114 + 6005610605115.

It is an arithmetic number, because the mean of its divisors is an integer number (6005610605115).

Almost surely, 2^{12011221210229} is an apocalyptic number.

It is an amenable number.

12011221210229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011221210229 is an equidigital number, since it uses as much as digits as its factorization.

12011221210229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 12011221210229 in words is "twelve trillion, eleven billion, two hundred twenty-one million, two hundred ten thousand, two hundred twenty-nine".