42221235121 has 8 divisors (see below), whose sum is σ = 45472360640. Its totient is φ = 38970586512.

The previous prime is 42221235113. The next prime is 42221235157. The reversal of 42221235121 is 12153212224.

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

It is not a de Polignac number, because 42221235121 - 2³ = 42221235113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42221235821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76570 + ... + 300508.

It is an arithmetic number, because the mean of its divisors is an integer number (5684045080).

Almost surely, 2^42221235121 is an apocalyptic number.

It is an amenable number.

42221235121 is a deficient number, since it is larger than the sum of its proper divisors (3251125519).

42221235121 is a wasteful number, since it uses less digits than its factorization.

42221235121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238455.

The product of its digits is 1920, while the sum is 25.

Adding to 42221235121 its reverse (12153212224), we get a palindrome (54374447345).

The spelling of 42221235121 in words is "forty-two billion, two hundred twenty-one million, two hundred thirty-five thousand, one hundred twenty-one".