44220121 has 4 divisors (see below), whose sum is σ = 48240144. Its totient is φ = 40200100.

The previous prime is 44220119. The next prime is 44220131. The reversal of 44220121 is 12102244.

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 44220121 - 2¹ = 44220119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44220095 and 44220104.

It is not an unprimeable number, because it can be changed into a prime (44220131) 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, 2009995 + ... + 2010016.

It is an arithmetic number, because the mean of its divisors is an integer number (12060036).

Almost surely, 2^44220121 is an apocalyptic number.

It is an amenable number.

44220121 is a deficient number, since it is larger than the sum of its proper divisors (4020023).

44220121 is a wasteful number, since it uses less digits than its factorization.

44220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020022.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 44220121 is about 6649.8211254138. The cubic root of 44220121 is about 353.6225695252.

Adding to 44220121 its reverse (12102244), we get a palindrome (56322365).

The spelling of 44220121 in words is "forty-four million, two hundred twenty thousand, one hundred twenty-one".