1143503221053 has 4 divisors (see below), whose sum is σ = 1524670961408. Its totient is φ = 762335480700.

The previous prime is 1143503221031. The next prime is 1143503221061. The reversal of 1143503221053 is 3501223053411.

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 not a de Polignac number, because 1143503221053 - 2³³ = 1134913286461 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 1143503221053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143503221453) 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, 190583870173 + ... + 190583870178.

It is an arithmetic number, because the mean of its divisors is an integer number (381167740352).

Almost surely, 2^{1143503221053} is an apocalyptic number.

It is an amenable number.

1143503221053 is a deficient number, since it is larger than the sum of its proper divisors (381167740355).

1143503221053 is an equidigital number, since it uses as much as digits as its factorization.

1143503221053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381167740354.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1143503221053 its reverse (3501223053411), we get a palindrome (4644726274464).

The spelling of 1143503221053 in words is "one trillion, one hundred forty-three billion, five hundred three million, two hundred twenty-one thousand, fifty-three".