1143343243221 has 4 divisors (see below), whose sum is σ = 1524457657632. Its totient is φ = 762228828812.

The previous prime is 1143343243187. The next prime is 1143343243223. The reversal of 1143343243221 is 1223423433411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1143343243221 - 2⁶ = 1143343243157 is a prime.

It is a super-2 number, since 2×1143343243221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143343243223) 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, 190557207201 + ... + 190557207206.

It is an arithmetic number, because the mean of its divisors is an integer number (381114414408).

Almost surely, 2^{1143343243221} is an apocalyptic number.

It is an amenable number.

1143343243221 is a deficient number, since it is larger than the sum of its proper divisors (381114414411).

1143343243221 is an equidigital number, since it uses as much as digits as its factorization.

1143343243221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381114414410.

The product of its digits is 41472, while the sum is 33.

Adding to 1143343243221 its reverse (1223423433411), we get a palindrome (2366766676632).

The spelling of 1143343243221 in words is "one trillion, one hundred forty-three billion, three hundred forty-three million, two hundred forty-three thousand, two hundred twenty-one".