402343002221 has 8 divisors (see below), whose sum is σ = 409178263200. Its totient is φ = 395508270960.

The previous prime is 402343002209. The next prime is 402343002343. The reversal of 402343002221 is 122200343204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402343002221 is a prime.

It is a super-2 number, since 2×402343002221² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402343502221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1587686 + ... + 1823576.

It is an arithmetic number, because the mean of its divisors is an integer number (51147282900).

Almost surely, 2^402343002221 is an apocalyptic number.

It is an amenable number.

402343002221 is a deficient number, since it is larger than the sum of its proper divisors (6835260979).

402343002221 is a wasteful number, since it uses less digits than its factorization.

402343002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264859.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 402343002221 its reverse (122200343204), we get a palindrome (524543345425).

The spelling of 402343002221 in words is "four hundred two billion, three hundred forty-three million, two thousand, two hundred twenty-one".