12110021029 has 2 divisors, whose sum is σ = 12110021030. Its totient is φ = 12110021028.

The previous prime is 12110020981. The next prime is 12110021083. The reversal of 12110021029 is 92012001121.

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., 6420336129 + 5689684900 = 80127^2 + 75430^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110021029 - 2³¹ = 9962537381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12110020997 and 12110021015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12110021929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055010514 + 6055010515.

It is an arithmetic number, because the mean of its divisors is an integer number (6055010515).

Almost surely, 2^12110021029 is an apocalyptic number.

It is an amenable number.

12110021029 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110021029 is an equidigital number, since it uses as much as digits as its factorization.

12110021029 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 19.

It can be divided in two parts, 121100 and 21029, that added together give a square (142129 = 377²).

The spelling of 12110021029 in words is "twelve billion, one hundred ten million, twenty-one thousand, twenty-nine".