42203321423321 has 2 divisors, whose sum is σ = 42203321423322. Its totient is φ = 42203321423320.

The previous prime is 42203321423309. The next prime is 42203321423359. The reversal of 42203321423321 is 12332412330224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33690931663321 + 8512389760000 = 5804389^2 + 2917600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42203321423321 is a prime.

It is a super-2 number, since 2×42203321423321² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42203321423371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21101660711660 + 21101660711661.

It is an arithmetic number, because the mean of its divisors is an integer number (21101660711661).

Almost surely, 2^{42203321423321} is an apocalyptic number.

It is an amenable number.

42203321423321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42203321423321 is an equidigital number, since it uses as much as digits as its factorization.

42203321423321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 42203321423321 its reverse (12332412330224), we get a palindrome (54535733753545).

The spelling of 42203321423321 in words is "forty-two trillion, two hundred three billion, three hundred twenty-one million, four hundred twenty-three thousand, three hundred twenty-one".