40422043221 has 64 divisors (see below), whose sum is σ = 65395814400. Its totient is φ = 21694887936.

The previous prime is 40422043219. The next prime is 40422043241. The reversal of 40422043221 is 12234022404.

It is not a de Polignac number, because 40422043221 - 2¹ = 40422043219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40422043191 and 40422043200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40422043241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43510885 + ... + 43511813.

It is an arithmetic number, because the mean of its divisors is an integer number (1021809600).

Almost surely, 2^40422043221 is an apocalyptic number.

It is an amenable number.

40422043221 is a deficient number, since it is larger than the sum of its proper divisors (24973771179).

40422043221 is a wasteful number, since it uses less digits than its factorization.

40422043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 40422043221 its reverse (12234022404), we get a palindrome (52656065625).

The spelling of 40422043221 in words is "forty billion, four hundred twenty-two million, forty-three thousand, two hundred twenty-one".