2044223210021 has 4 divisors (see below), whose sum is σ = 2044345000992. Its totient is φ = 2044101419052.

The previous prime is 2044223210017. The next prime is 2044223210059. The reversal of 2044223210021 is 1200123224402.

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 2044223210021 - 2² = 2044223210017 is a prime.

It is a super-2 number, since 2×2044223210021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044223210221) 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, 60870305 + ... + 60903878.

It is an arithmetic number, because the mean of its divisors is an integer number (511086250248).

Almost surely, 2^{2044223210021} is an apocalyptic number.

It is an amenable number.

2044223210021 is a deficient number, since it is larger than the sum of its proper divisors (121790971).

2044223210021 is a wasteful number, since it uses less digits than its factorization.

2044223210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121790970.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 2044223210021 its reverse (1200123224402), we get a palindrome (3244346434423).

The spelling of 2044223210021 in words is "two trillion, forty-four billion, two hundred twenty-three million, two hundred ten thousand, twenty-one".