2044442042021 has 16 divisors (see below), whose sum is σ = 2189112944640. Its totient is φ = 1905063027840.

The previous prime is 2044442041991. The next prime is 2044442042023. The reversal of 2044442042021 is 1202402444402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2044442042021 - 2³⁸ = 1769564135077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044442042023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2768336 + ... + 3428201.

It is an arithmetic number, because the mean of its divisors is an integer number (136819559040).

Almost surely, 2^{2044442042021} is an apocalyptic number.

It is an amenable number.

2044442042021 is a deficient number, since it is larger than the sum of its proper divisors (144670902619).

2044442042021 is a wasteful number, since it uses less digits than its factorization.

2044442042021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6196964.

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 2044442042021 its reverse (1202402444402), we get a palindrome (3246844486423).

The spelling of 2044442042021 in words is "two trillion, forty-four billion, four hundred forty-two million, forty-two thousand, twenty-one".