1011321233143 has 4 divisors (see below), whose sum is σ = 1089115174168. Its totient is φ = 933527292120.

The previous prime is 1011321233119. The next prime is 1011321233183. The reversal of 1011321233143 is 3413321231101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011321233143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011321233183) 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, 38896970493 + ... + 38896970518.

It is an arithmetic number, because the mean of its divisors is an integer number (272278793542).

Almost surely, 2^{1011321233143} is an apocalyptic number.

1011321233143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1011321233143 is a deficient number, since it is larger than the sum of its proper divisors (77793941025).

1011321233143 is an equidigital number, since it uses as much as digits as its factorization.

1011321233143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77793941024.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1011321233143 its reverse (3413321231101), we get a palindrome (4424642464244).

The spelling of 1011321233143 in words is "one trillion, eleven billion, three hundred twenty-one million, two hundred thirty-three thousand, one hundred forty-three".