12011111021029 has 2 divisors, whose sum is σ = 12011111021030. Its totient is φ = 12011111021028.

The previous prime is 12011111021011. The next prime is 12011111021057. The reversal of 12011111021029 is 92012011111021.

It is a happy number.

12011111021029 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., 11323911470404 + 687199550625 = 3365102^2 + 828975^2 .

It is an emirp because it is prime and its reverse (92012011111021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011111021029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011111021009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005555510514 + 6005555510515.

It is an arithmetic number, because the mean of its divisors is an integer number (6005555510515).

Almost surely, 2^{12011111021029} is an apocalyptic number.

It is an amenable number.

12011111021029 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011111021029 is an equidigital number, since it uses as much as digits as its factorization.

12011111021029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 12011111021029 in words is "twelve trillion, eleven billion, one hundred eleven million, twenty-one thousand, twenty-nine".