440002224142021 has 4 divisors (see below), whose sum is σ = 440227982083500. Its totient is φ = 439776466200544.

The previous prime is 440002224142007. The next prime is 440002224142079. The reversal of 440002224142021 is 120241422200044.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 348429075725025 + 91573148416996 = 18666255^2 + 9569386^2 .

It is a cyclic number.

It is not a de Polignac number, because 440002224142021 - 2²⁹ = 440001687271109 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 (440002224112021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112878967816 + ... + 112878971713.

It is an arithmetic number, because the mean of its divisors is an integer number (110056995520875).

Almost surely, 2^{440002224142021} is an apocalyptic number.

It is an amenable number.

440002224142021 is a deficient number, since it is larger than the sum of its proper divisors (225757941479).

440002224142021 is a wasteful number, since it uses less digits than its factorization.

440002224142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225757941478.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 440002224142021 its reverse (120241422200044), we get a palindrome (560243646342065).

The spelling of 440002224142021 in words is "four hundred forty trillion, two billion, two hundred twenty-four million, one hundred forty-two thousand, twenty-one".