42112211021 has 8 divisors (see below), whose sum is σ = 44990266080. Its totient is φ = 39300318288.

The previous prime is 42112210997. The next prime is 42112211027. The reversal of 42112211021 is 12011221124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42112211021 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 (42112211027) 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, 16539266 + ... + 16541811.

It is an arithmetic number, because the mean of its divisors is an integer number (5623783260).

Almost surely, 2^42112211021 is an apocalyptic number.

It is an amenable number.

42112211021 is a deficient number, since it is larger than the sum of its proper divisors (2878055059).

42112211021 is a wasteful number, since it uses less digits than its factorization.

42112211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33081163.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 42112211021 its reverse (12011221124), we get a palindrome (54123432145).

The spelling of 42112211021 in words is "forty-two billion, one hundred twelve million, two hundred eleven thousand, twenty-one".