40444022442221 has 4 divisors (see below), whose sum is σ = 41384581103712. Its totient is φ = 39503463780732.

The previous prime is 40444022442191. The next prime is 40444022442323. The reversal of 40444022442221 is 12224422044404.

40444022442221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40444022442221 - 2¹⁴ = 40444022425837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444012442221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470279330681 + ... + 470279330766.

It is an arithmetic number, because the mean of its divisors is an integer number (10346145275928).

Almost surely, 2^{40444022442221} is an apocalyptic number.

It is an amenable number.

40444022442221 is a deficient number, since it is larger than the sum of its proper divisors (940558661491).

40444022442221 is an equidigital number, since it uses as much as digits as its factorization.

40444022442221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940558661490.

The product of its (nonzero) digits is 131072, while the sum is 35.

Adding to 40444022442221 its reverse (12224422044404), we get a palindrome (52668444486625).

The spelling of 40444022442221 in words is "forty trillion, four hundred forty-four billion, twenty-two million, four hundred forty-two thousand, two hundred twenty-one".