20333010143221 has 2 divisors, whose sum is σ = 20333010143222. Its totient is φ = 20333010143220.

The previous prime is 20333010143167. The next prime is 20333010143239. The reversal of 20333010143221 is 12234101033302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11672055440721 + 8660954702500 = 3416439^2 + 2942950^2 .

It is a cyclic number.

It is not a de Polignac number, because 20333010143221 - 2¹⁵ = 20333010110453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20333010143521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166505071610 + 10166505071611.

It is an arithmetic number, because the mean of its divisors is an integer number (10166505071611).

Almost surely, 2^{20333010143221} is an apocalyptic number.

It is an amenable number.

20333010143221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333010143221 is an equidigital number, since it uses as much as digits as its factorization.

20333010143221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20333010143221 its reverse (12234101033302), we get a palindrome (32567111176523).

The spelling of 20333010143221 in words is "twenty trillion, three hundred thirty-three billion, ten million, one hundred forty-three thousand, two hundred twenty-one".