1021133311423 has 4 divisors (see below), whose sum is σ = 1033436122488. Its totient is φ = 1008830500360.

The previous prime is 1021133311421. The next prime is 1021133311439. The reversal of 1021133311423 is 3241133311201.

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 1021133311423 - 2¹ = 1021133311421 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 (1021133311421) 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, 6151405408 + ... + 6151405573.

It is an arithmetic number, because the mean of its divisors is an integer number (258359030622).

Almost surely, 2^{1021133311423} is an apocalyptic number.

1021133311423 is a deficient number, since it is larger than the sum of its proper divisors (12302811065).

1021133311423 is an equidigital number, since it uses as much as digits as its factorization.

1021133311423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302811064.

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

Adding to 1021133311423 its reverse (3241133311201), we get a palindrome (4262266622624).

The spelling of 1021133311423 in words is "one trillion, twenty-one billion, one hundred thirty-three million, three hundred eleven thousand, four hundred twenty-three".