20032422123421 has 2 divisors, whose sum is σ = 20032422123422. Its totient is φ = 20032422123420.

The previous prime is 20032422123359. The next prime is 20032422123449. The reversal of 20032422123421 is 12432122423002.

It is an a-pointer prime, because the next prime (20032422123449) can be obtained adding 20032422123421 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13123672720921 + 6908749402500 = 3622661^2 + 2628450^2 .

It is a cyclic number.

It is not a de Polignac number, because 20032422123421 - 2¹¹ = 20032422121373 is a prime.

It is a super-3 number, since 3×20032422123421³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 20032422123421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20032422123451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016211061710 + 10016211061711.

It is an arithmetic number, because the mean of its divisors is an integer number (10016211061711).

Almost surely, 2^{20032422123421} is an apocalyptic number.

It is an amenable number.

20032422123421 is a deficient number, since it is larger than the sum of its proper divisors (1).

20032422123421 is an equidigital number, since it uses as much as digits as its factorization.

20032422123421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20032422123421 its reverse (12432122423002), we get a palindrome (32464544546423).

The spelling of 20032422123421 in words is "twenty trillion, thirty-two billion, four hundred twenty-two million, one hundred twenty-three thousand, four hundred twenty-one".