402441011321 has 4 divisors (see below), whose sum is σ = 423622117200. Its totient is φ = 381259905444.

The previous prime is 402441011263. The next prime is 402441011333. The reversal of 402441011321 is 123110144204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402441011321 - 2²⁶ = 402373902457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402441511321) 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, 10590552911 + ... + 10590552948.

It is an arithmetic number, because the mean of its divisors is an integer number (105905529300).

Almost surely, 2^402441011321 is an apocalyptic number.

It is an amenable number.

402441011321 is a deficient number, since it is larger than the sum of its proper divisors (21181105879).

402441011321 is a wasteful number, since it uses less digits than its factorization.

402441011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21181105878.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 402441011321 its reverse (123110144204), we get a palindrome (525551155525).

The spelling of 402441011321 in words is "four hundred two billion, four hundred forty-one million, eleven thousand, three hundred twenty-one".