12021221221033 has 2 divisors, whose sum is σ = 12021221221034. Its totient is φ = 12021221221032.

The previous prime is 12021221221021. The next prime is 12021221221049. The reversal of 12021221221033 is 33012212212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11804254375824 + 216966845209 = 3435732^2 + 465797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021221221033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021221220995 and 12021221221013.

It is not a weakly prime, because it can be changed into another prime (12021221521033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010610610516 + 6010610610517.

It is an arithmetic number, because the mean of its divisors is an integer number (6010610610517).

Almost surely, 2^{12021221221033} is an apocalyptic number.

It is an amenable number.

12021221221033 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021221221033 is an equidigital number, since it uses as much as digits as its factorization.

12021221221033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12021221221033 its reverse (33012212212021), we get a palindrome (45033433433054).

The spelling of 12021221221033 in words is "twelve trillion, twenty-one billion, two hundred twenty-one million, two hundred twenty-one thousand, thirty-three".