2044213121 has 4 divisors (see below), whose sum is σ = 2049783552. Its totient is φ = 2038642692.

The previous prime is 2044213117. The next prime is 2044213139. The reversal of 2044213121 is 1213124402.

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 2044213121 - 2² = 2044213117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2044213093 and 2044213102.

It is not an unprimeable number, because it can be changed into a prime (2044213621) 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, 2784665 + ... + 2785398.

It is an arithmetic number, because the mean of its divisors is an integer number (512445888).

Almost surely, 2^2044213121 is an apocalyptic number.

It is an amenable number.

2044213121 is a deficient number, since it is larger than the sum of its proper divisors (5570431).

2044213121 is an equidigital number, since it uses as much as digits as its factorization.

2044213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570430.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2044213121 is about 45212.9751398866. The cubic root of 2044213121 is about 1269.1376378499.

Adding to 2044213121 its reverse (1213124402), we get a palindrome (3257337523).

The spelling of 2044213121 in words is "two billion, forty-four million, two hundred thirteen thousand, one hundred twenty-one".