2044252021 has 24 divisors (see below), whose sum is σ = 2484069120. Its totient is φ = 1675249632.

The previous prime is 2044251997. The next prime is 2044252031. The reversal of 2044252021 is 1202524402.

It is not a de Polignac number, because 2044252021 - 2²³ = 2035863413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2044251983 and 2044252001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044252031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139380 + ... + 153346.

It is an arithmetic number, because the mean of its divisors is an integer number (103502880).

Almost surely, 2^2044252021 is an apocalyptic number.

It is an amenable number.

2044252021 is a deficient number, since it is larger than the sum of its proper divisors (439817099).

2044252021 is a wasteful number, since it uses less digits than its factorization.

2044252021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14113 (or 14106 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2044252021 is about 45213.4053240850. The cubic root of 2044252021 is about 1269.1456880772.

Adding to 2044252021 its reverse (1202524402), we get a palindrome (3246776423).

The spelling of 2044252021 in words is "two billion, forty-four million, two hundred fifty-two thousand, twenty-one".