4400551441221 has 32 divisors (see below), whose sum is σ = 6424272986880. Its totient is φ = 2662830374400.

The previous prime is 4400551441211. The next prime is 4400551441241. The reversal of 4400551441221 is 1221441550044.

It is not a de Polignac number, because 4400551441221 - 2⁶ = 4400551441157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400551441211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7617241 + ... + 8174561.

It is an arithmetic number, because the mean of its divisors is an integer number (200758530840).

Almost surely, 2^{4400551441221} is an apocalyptic number.

It is an amenable number.

4400551441221 is a deficient number, since it is larger than the sum of its proper divisors (2023721545659).

4400551441221 is a wasteful number, since it uses less digits than its factorization.

4400551441221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560717.

The product of its (nonzero) digits is 25600, while the sum is 33.

Adding to 4400551441221 its reverse (1221441550044), we get a palindrome (5621992991265).

The spelling of 4400551441221 in words is "four trillion, four hundred billion, five hundred fifty-one million, four hundred forty-one thousand, two hundred twenty-one".