442002131333221 has 4 divisors (see below), whose sum is σ = 442115262161632. Its totient is φ = 441889000504812.

The previous prime is 442002131333209. The next prime is 442002131333227. The reversal of 442002131333221 is 122333131200244.

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 442002131333221 - 2⁹ = 442002131332709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442002131333227) 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, 56565408345 + ... + 56565416158.

It is an arithmetic number, because the mean of its divisors is an integer number (110528815540408).

Almost surely, 2^{442002131333221} is an apocalyptic number.

It is an amenable number.

442002131333221 is a deficient number, since it is larger than the sum of its proper divisors (113130828411).

442002131333221 is a wasteful number, since it uses less digits than its factorization.

442002131333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113130828410.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 442002131333221 its reverse (122333131200244), we get a palindrome (564335262533465).

The spelling of 442002131333221 in words is "four hundred forty-two trillion, two billion, one hundred thirty-one million, three hundred thirty-three thousand, two hundred twenty-one".