440021100001 has 6 divisors (see below), whose sum is σ = 511861279650. Its totient is φ = 377160942816.

The previous prime is 440021099983. The next prime is 440021100011. The reversal of 440021100001 is 100001120044.

It can be written as a sum of positive squares in only one way, i.e., 255202790976 + 184818309025 = 505176^2 + 429905^2 .

It is not a de Polignac number, because 440021100001 - 2¹¹ = 440021097953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440021100011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4490011176 + ... + 4490011273.

It is an arithmetic number, because the mean of its divisors is an integer number (85310213275).

Almost surely, 2^440021100001 is an apocalyptic number.

It is an amenable number.

440021100001 is a deficient number, since it is larger than the sum of its proper divisors (71840179649).

440021100001 is an equidigital number, since it uses as much as digits as its factorization.

440021100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8980022463 (or 8980022456 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 440021100001 its reverse (100001120044), we get a palindrome (540022220045).

The spelling of 440021100001 in words is "four hundred forty billion, twenty-one million, one hundred thousand, one".