42331213321 has 2 divisors, whose sum is σ = 42331213322. Its totient is φ = 42331213320.

The previous prime is 42331213313. The next prime is 42331213361. The reversal of 42331213321 is 12331213324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41183020096 + 1148193225 = 202936^2 + 33885^2 .

It is a cyclic number.

It is not a de Polignac number, because 42331213321 - 2³ = 42331213313 is a prime.

It is not a weakly prime, because it can be changed into another prime (42331213361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21165606660 + 21165606661.

It is an arithmetic number, because the mean of its divisors is an integer number (21165606661).

Almost surely, 2^42331213321 is an apocalyptic number.

It is an amenable number.

42331213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42331213321 is an equidigital number, since it uses as much as digits as its factorization.

42331213321 is an evil number, because the sum of its binary digits is even.

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

Adding to 42331213321 its reverse (12331213324), we get a palindrome (54662426645).

The spelling of 42331213321 in words is "forty-two billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred twenty-one".