321420033020143 has 2 divisors, whose sum is σ = 321420033020144. Its totient is φ = 321420033020142.

The previous prime is 321420033020017. The next prime is 321420033020161. The reversal of 321420033020143 is 341020330024123.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321420033020143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321420033020843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160710016510071 + 160710016510072.

It is an arithmetic number, because the mean of its divisors is an integer number (160710016510072).

Almost surely, 2^{321420033020143} is an apocalyptic number.

321420033020143 is a deficient number, since it is larger than the sum of its proper divisors (1).

321420033020143 is an equidigital number, since it uses as much as digits as its factorization.

321420033020143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 321420033020143 its reverse (341020330024123), we get a palindrome (662440363044266).

The spelling of 321420033020143 in words is "three hundred twenty-one trillion, four hundred twenty billion, thirty-three million, twenty thousand, one hundred forty-three".