2044226621 has 4 divisors (see below), whose sum is σ = 2050118112. Its totient is φ = 2038335132.

The previous prime is 2044226543. The next prime is 2044226623. The reversal of 2044226621 is 1266224402.

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 2044226621 - 2²⁶ = 1977117757 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 (2044226623) 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, 2945225 + ... + 2945918.

It is an arithmetic number, because the mean of its divisors is an integer number (512529528).

Almost surely, 2^2044226621 is an apocalyptic number.

It is an amenable number.

2044226621 is a deficient number, since it is larger than the sum of its proper divisors (5891491).

2044226621 is an equidigital number, since it uses as much as digits as its factorization.

2044226621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891490.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 2044226621 is about 45213.1244330670. The cubic root of 2044226621 is about 1269.1404316422.

The spelling of 2044226621 in words is "two billion, forty-four million, two hundred twenty-six thousand, six hundred twenty-one".