20332221212021 has 2 divisors, whose sum is σ = 20332221212022. Its totient is φ = 20332221212020.

The previous prime is 20332221211987. The next prime is 20332221212047. The reversal of 20332221212021 is 12021212223302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14245076290225 + 6087144921796 = 3774265^2 + 2467214^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332221212021 - 2⁶ = 20332221211957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20332221212071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166110606010 + 10166110606011.

It is an arithmetic number, because the mean of its divisors is an integer number (10166110606011).

Almost surely, 2^{20332221212021} is an apocalyptic number.

It is an amenable number.

20332221212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332221212021 is an equidigital number, since it uses as much as digits as its factorization.

20332221212021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20332221212021 its reverse (12021212223302), we get a palindrome (32353433435323).

The spelling of 20332221212021 in words is "twenty trillion, three hundred thirty-two billion, two hundred twenty-one million, two hundred twelve thousand, twenty-one".