402211232321 has 4 divisors (see below), whose sum is σ = 402403772100. Its totient is φ = 402018692544.

The previous prime is 402211232251. The next prime is 402211232347. The reversal of 402211232321 is 123232112204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 307208581696 + 95002650625 = 554264^2 + 308225^2 .

It is a cyclic number.

It is not a de Polignac number, because 402211232321 - 2³⁰ = 401137490497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402211232221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96266756 + ... + 96270933.

It is an arithmetic number, because the mean of its divisors is an integer number (100600943025).

Almost surely, 2^402211232321 is an apocalyptic number.

It is an amenable number.

402211232321 is a deficient number, since it is larger than the sum of its proper divisors (192539779).

402211232321 is a wasteful number, since it uses less digits than its factorization.

402211232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192539778.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 402211232321 its reverse (123232112204), we get a palindrome (525443344525).

The spelling of 402211232321 in words is "four hundred two billion, two hundred eleven million, two hundred thirty-two thousand, three hundred twenty-one".