42221334021 has 8 divisors (see below), whose sum is σ = 56296525824. Its totient is φ = 28146849120.

The previous prime is 42221334017. The next prime is 42221334031. The reversal of 42221334021 is 12043312224.

It is a happy number.

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

It is not a de Polignac number, because 42221334021 - 2² = 42221334017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42221333982 and 42221334000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221334031) 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 7 ways as a sum of consecutive naturals, for example, 16645 + ... + 291066.

It is an arithmetic number, because the mean of its divisors is an integer number (7037065728).

Almost surely, 2^42221334021 is an apocalyptic number.

It is an amenable number.

42221334021 is a deficient number, since it is larger than the sum of its proper divisors (14075191803).

42221334021 is a wasteful number, since it uses less digits than its factorization.

42221334021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353451.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 42221334021 its reverse (12043312224), we get a palindrome (54264646245).

The spelling of 42221334021 in words is "forty-two billion, two hundred twenty-one million, three hundred thirty-four thousand, twenty-one".