12012022210021 has 2 divisors, whose sum is σ = 12012022210022. Its totient is φ = 12012022210020.

The previous prime is 12012022209881. The next prime is 12012022210057. The reversal of 12012022210021 is 12001222021021.

It is a happy number.

12012022210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11992098887521 + 19923322500 = 3462961^2 + 141150^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012022210021 - 2²³ = 12012013821413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012022209977 and 12012022210004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012022210081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006011105010 + 6006011105011.

It is an arithmetic number, because the mean of its divisors is an integer number (6006011105011).

Almost surely, 2^{12012022210021} is an apocalyptic number.

It is an amenable number.

12012022210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012022210021 is an equidigital number, since it uses as much as digits as its factorization.

12012022210021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12012022210021 its reverse (12001222021021), we get a palindrome (24013244231042).

The spelling of 12012022210021 in words is "twelve trillion, twelve billion, twenty-two million, two hundred ten thousand, twenty-one".