1012123421143 has 4 divisors (see below), whose sum is σ = 1012219705168. Its totient is φ = 1012027137120.

The previous prime is 1012123421129. The next prime is 1012123421147. The reversal of 1012123421143 is 3411243212101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012123421143 - 2¹⁷ = 1012123290071 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 (1012123421147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48126243 + ... + 48147268.

It is an arithmetic number, because the mean of its divisors is an integer number (253054926292).

Almost surely, 2^{1012123421143} is an apocalyptic number.

1012123421143 is a deficient number, since it is larger than the sum of its proper divisors (96284025).

1012123421143 is an equidigital number, since it uses as much as digits as its factorization.

1012123421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96284024.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1012123421143 its reverse (3411243212101), we get a palindrome (4423366633244).

The spelling of 1012123421143 in words is "one trillion, twelve billion, one hundred twenty-three million, four hundred twenty-one thousand, one hundred forty-three".