2243433421 has 4 divisors (see below), whose sum is σ = 2265214432. Its totient is φ = 2221652412.

The previous prime is 2243433403. The next prime is 2243433431. The reversal of 2243433421 is 1243343422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1243343422 = 2 ⋅621671711.

It is a cyclic number.

It is not a de Polignac number, because 2243433421 - 2⁹ = 2243432909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2243433421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243433431) 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, 10890351 + ... + 10890556.

It is an arithmetic number, because the mean of its divisors is an integer number (566303608).

Almost surely, 2^2243433421 is an apocalyptic number.

It is an amenable number.

2243433421 is a deficient number, since it is larger than the sum of its proper divisors (21781011).

2243433421 is a wasteful number, since it uses less digits than its factorization.

2243433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21781010.

The product of its digits is 13824, while the sum is 28.

The square root of 2243433421 is about 47364.8965057457. The cubic root of 2243433421 is about 1309.0946916030.

Adding to 2243433421 its reverse (1243343422), we get a palindrome (3486776843).

It can be divided in two parts, 22434 and 33421, that added together give a palindrome (55855).

The spelling of 2243433421 in words is "two billion, two hundred forty-three million, four hundred thirty-three thousand, four hundred twenty-one".