40431222433221 has 32 divisors (see below), whose sum is σ = 57698151724800. Its totient is φ = 25126001032704.

The previous prime is 40431222433183. The next prime is 40431222433253. The reversal of 40431222433221 is 12233422213404.

It is a happy number.

It is not a de Polignac number, because 40431222433221 - 2⁶ = 40431222433157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431222433291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36555256 + ... + 37645041.

It is an arithmetic number, because the mean of its divisors is an integer number (1803067241400).

Almost surely, 2^{40431222433221} is an apocalyptic number.

It is an amenable number.

40431222433221 is a deficient number, since it is larger than the sum of its proper divisors (17266929291579).

40431222433221 is a wasteful number, since it uses less digits than its factorization.

40431222433221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74200525.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 40431222433221 its reverse (12233422213404), we get a palindrome (52664644646625).

The spelling of 40431222433221 in words is "forty trillion, four hundred thirty-one billion, two hundred twenty-two million, four hundred thirty-three thousand, two hundred twenty-one".