42221321313 has 4 divisors (see below), whose sum is σ = 56295095088. Its totient is φ = 28147547540.

The previous prime is 42221321309. The next prime is 42221321347. The reversal of 42221321313 is 31312312224.

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 42221321313 - 2² = 42221321309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42221321113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7036886883 + ... + 7036886888.

It is an arithmetic number, because the mean of its divisors is an integer number (14073773772).

Almost surely, 2^42221321313 is an apocalyptic number.

It is an amenable number.

42221321313 is a deficient number, since it is larger than the sum of its proper divisors (14073773775).

42221321313 is a wasteful number, since it uses less digits than its factorization.

42221321313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14073773774.

The product of its digits is 1728, while the sum is 24.

Adding to 42221321313 its reverse (31312312224), we get a palindrome (73533633537).

The spelling of 42221321313 in words is "forty-two billion, two hundred twenty-one million, three hundred twenty-one thousand, three hundred thirteen".