4400013202221 has 128 divisors (see below), whose sum is σ = 7710706483200. Its totient is φ = 2165710970880.

The previous prime is 4400013202217. The next prime is 4400013202241. The reversal of 4400013202221 is 1222023100044.

It is not a de Polignac number, because 4400013202221 - 2² = 4400013202217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400013202241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 521880876 + ... + 521889306.

It is an arithmetic number, because the mean of its divisors is an integer number (60239894400).

Almost surely, 2^{4400013202221} is an apocalyptic number.

It is an amenable number.

4400013202221 is a deficient number, since it is larger than the sum of its proper divisors (3310693280979).

4400013202221 is a wasteful number, since it uses less digits than its factorization.

4400013202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9419.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 4400013202221 its reverse (1222023100044), we get a palindrome (5622036302265).

The spelling of 4400013202221 in words is "four trillion, four hundred billion, thirteen million, two hundred two thousand, two hundred twenty-one".