322430200021 has 2 divisors, whose sum is σ = 322430200022. Its totient is φ = 322430200020.

The previous prime is 322430200009. The next prime is 322430200049. The reversal of 322430200021 is 120002034223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247471426225 + 74958773796 = 497465^2 + 273786^2 .

It is a cyclic number.

It is not a de Polignac number, because 322430200021 - 2¹³ = 322430191829 is a prime.

It is a super-2 number, since 2×322430200021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322430200721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161215100010 + 161215100011.

It is an arithmetic number, because the mean of its divisors is an integer number (161215100011).

Almost surely, 2^322430200021 is an apocalyptic number.

It is an amenable number.

322430200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

322430200021 is an equidigital number, since it uses as much as digits as its factorization.

322430200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 322430200021 its reverse (120002034223), we get a palindrome (442432234244).

The spelling of 322430200021 in words is "three hundred twenty-two billion, four hundred thirty million, two hundred thousand, twenty-one".