12110101021021 has 2 divisors, whose sum is σ = 12110101021022. Its totient is φ = 12110101021020.

The previous prime is 12110101021019. The next prime is 12110101021087. The reversal of 12110101021021 is 12012010101121.

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., 7444548540900 + 4665552480121 = 2728470^2 + 2159989^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110101021021 - 2¹ = 12110101021019 is a prime.

Together with 12110101021019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12110101020992 and 12110101021010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12110101021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055050510510 + 6055050510511.

It is an arithmetic number, because the mean of its divisors is an integer number (6055050510511).

Almost surely, 2^{12110101021021} is an apocalyptic number.

It is an amenable number.

12110101021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110101021021 is an equidigital number, since it uses as much as digits as its factorization.

12110101021021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12110101021021 its reverse (12012010101121), we get a palindrome (24122111122142).

The spelling of 12110101021021 in words is "twelve trillion, one hundred ten billion, one hundred one million, twenty-one thousand, twenty-one".