20044051221 has 8 divisors (see below), whose sum is σ = 26726363104. Its totient is φ = 13362220080.

The previous prime is 20044051213. The next prime is 20044051267. The reversal of 20044051221 is 12215044002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20044051221 - 2³ = 20044051213 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 (20044051271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7915 + ... + 200376.

It is an arithmetic number, because the mean of its divisors is an integer number (3340795388).

Almost surely, 2^20044051221 is an apocalyptic number.

It is an amenable number.

20044051221 is a deficient number, since it is larger than the sum of its proper divisors (6682311883).

20044051221 is a wasteful number, since it uses less digits than its factorization.

20044051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240371.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 20044051221 its reverse (12215044002), we get a palindrome (32259095223).

The spelling of 20044051221 in words is "twenty billion, forty-four million, fifty-one thousand, two hundred twenty-one".