42231001121 has 4 divisors (see below), whose sum is σ = 42258091200. Its totient is φ = 42203911044.

The previous prime is 42231001117. The next prime is 42231001147. The reversal of 42231001121 is 12110013224.

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 42231001121 - 2² = 42231001117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42231001121.

It is not an unprimeable number, because it can be changed into a prime (42231001181) 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, 13542701 + ... + 13545818.

It is an arithmetic number, because the mean of its divisors is an integer number (10564522800).

Almost surely, 2^42231001121 is an apocalyptic number.

It is an amenable number.

42231001121 is a deficient number, since it is larger than the sum of its proper divisors (27090079).

42231001121 is a wasteful number, since it uses less digits than its factorization.

42231001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27090078.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 42231001121 its reverse (12110013224), we get a palindrome (54341014345).

The spelling of 42231001121 in words is "forty-two billion, two hundred thirty-one million, one thousand, one hundred twenty-one".