42032431211221 has 8 divisors (see below), whose sum is σ = 45853622368704. Its totient is φ = 38211250228320.

The previous prime is 42032431211207. The next prime is 42032431211291. The reversal of 42032431211221 is 12211213423024.

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

It is a cyclic number.

It is not a de Polignac number, because 42032431211221 - 2⁹ = 42032431210709 is a prime.

It is a super-2 number, since 2×42032431211221² (a number of 28 digits) contains 22 as substring.

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 42032431211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42032431211201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7991200 + ... + 12162406.

It is an arithmetic number, because the mean of its divisors is an integer number (5731702796088).

Almost surely, 2^{42032431211221} is an apocalyptic number.

It is an amenable number.

42032431211221 is a deficient number, since it is larger than the sum of its proper divisors (3821191157483).

42032431211221 is a wasteful number, since it uses less digits than its factorization.

42032431211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087291.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 42032431211221 its reverse (12211213423024), we get a palindrome (54243644634245).

The spelling of 42032431211221 in words is "forty-two trillion, thirty-two billion, four hundred thirty-one million, two hundred eleven thousand, two hundred twenty-one".