2021144434 has 8 divisors (see below), whose sum is σ = 3036830940. Its totient is φ = 1008867456.

The previous prime is 2021144429. The next prime is 2021144449. The reversal of 2021144434 is 4344411202.

It can be written as a sum of positive squares in 2 ways, for example, as 2011253409 + 9891025 = 44847^2 + 3145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021144399 and 2021144408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850899 + ... + 853270.

Almost surely, 2^2021144434 is an apocalyptic number.

2021144434 is a deficient number, since it is larger than the sum of its proper divisors (1015686506).

2021144434 is a wasteful number, since it uses less digits than its factorization.

2021144434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704764.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2021144434 is about 44957.1399668618. The cubic root of 2021144434 is about 1264.3455470009.

Adding to 2021144434 its reverse (4344411202), we get a palindrome (6365555636).

The spelling of 2021144434 in words is "two billion, twenty-one million, one hundred forty-four thousand, four hundred thirty-four".