2121443023 has 8 divisors (see below), whose sum is σ = 2438052480. Its totient is φ = 1808220120.

The previous prime is 2121443021. The next prime is 2121443041. The reversal of 2121443023 is 3203441212.

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

It is not a de Polignac number, because 2121443023 - 2¹ = 2121443021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121442985 and 2121443003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121443021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 845293 + ... + 847798.

It is an arithmetic number, because the mean of its divisors is an integer number (304756560).

Almost surely, 2^2121443023 is an apocalyptic number.

2121443023 is a deficient number, since it is larger than the sum of its proper divisors (316609457).

2121443023 is a wasteful number, since it uses less digits than its factorization.

2121443023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693277.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2121443023 is about 46059.1252956458. The cubic root of 2121443023 is about 1284.9230622076.

Adding to 2121443023 its reverse (3203441212), we get a palindrome (5324884235).

The spelling of 2121443023 in words is "two billion, one hundred twenty-one million, four hundred forty-three thousand, twenty-three".