40041002221 has 4 divisors (see below), whose sum is σ = 43681093344. Its totient is φ = 36400911100.

The previous prime is 40041002219. The next prime is 40041002263. The reversal of 40041002221 is 12220014004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40041002221 - 2¹ = 40041002219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40041002195 and 40041002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40041002201) 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 3 ways as a sum of consecutive naturals, for example, 1820045545 + ... + 1820045566.

It is an arithmetic number, because the mean of its divisors is an integer number (10920273336).

Almost surely, 2^40041002221 is an apocalyptic number.

It is an amenable number.

40041002221 is a deficient number, since it is larger than the sum of its proper divisors (3640091123).

40041002221 is a wasteful number, since it uses less digits than its factorization.

40041002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640091122.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 40041002221 its reverse (12220014004), we get a palindrome (52261016225).

The spelling of 40041002221 in words is "forty billion, forty-one million, two thousand, two hundred twenty-one".