12111021029 has 2 divisors, whose sum is σ = 12111021030. Its totient is φ = 12111021028.

The previous prime is 12111021011. The next prime is 12111021047. The reversal of 12111021029 is 92012011121.

It is a balanced prime because it is at equal distance from previous prime (12111021011) and next prime (12111021047).

It can be written as a sum of positive squares in only one way, i.e., 10829524225 + 1281496804 = 104065^2 + 35798^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111021029 - 2⁸ = 12111020773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111021029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111021089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055510514 + 6055510515.

It is an arithmetic number, because the mean of its divisors is an integer number (6055510515).

Almost surely, 2^12111021029 is an apocalyptic number.

It is an amenable number.

12111021029 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111021029 is an equidigital number, since it uses as much as digits as its factorization.

12111021029 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 20.

The spelling of 12111021029 in words is "twelve billion, one hundred eleven million, twenty-one thousand, twenty-nine".