40015322221 has 8 divisors (see below), whose sum is σ = 46665099200. Its totient is φ = 34298847324.

The previous prime is 40015322201. The next prime is 40015322233. The reversal of 40015322221 is 12222351004.

It is a happy number.

It is not a de Polignac number, because 40015322221 - 2⁷ = 40015322093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40015322192 and 40015322201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40015322201) 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, 58331031 + ... + 58331716.

It is an arithmetic number, because the mean of its divisors is an integer number (5833137400).

Almost surely, 2^40015322221 is an apocalyptic number.

It is an amenable number.

40015322221 is a deficient number, since it is larger than the sum of its proper divisors (6649776979).

40015322221 is an equidigital number, since it uses as much as digits as its factorization.

40015322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116662768 (or 116662754 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 40015322221 its reverse (12222351004), we get a palindrome (52237673225).

The spelling of 40015322221 in words is "forty billion, fifteen million, three hundred twenty-two thousand, two hundred twenty-one".