40434322221 has 12 divisors (see below), whose sum is σ = 59829648060. Its totient is φ = 26298745920.

The previous prime is 40434322219. The next prime is 40434322307. The reversal of 40434322221 is 12222343404.

40434322221 is a `hidden beast` number, since 4 + 0 + 4 + 3 + 432 + 2 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1570536900 + 38863785321 = 39630^2 + 197139^2 .

It is not a de Polignac number, because 40434322221 - 2¹ = 40434322219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40434322021) 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 11 ways as a sum of consecutive naturals, for example, 54788686 + ... + 54789423.

It is an arithmetic number, because the mean of its divisors is an integer number (4985804005).

Almost surely, 2^40434322221 is an apocalyptic number.

40434322221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40434322221 is a deficient number, since it is larger than the sum of its proper divisors (19395325839).

40434322221 is a wasteful number, since it uses less digits than its factorization.

40434322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109578156 (or 109578153 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40434322221 its reverse (12222343404), we get a palindrome (52656665625).

The spelling of 40434322221 in words is "forty billion, four hundred thirty-four million, three hundred twenty-two thousand, two hundred twenty-one".