1123442323421 has 24 divisors (see below), whose sum is σ = 1250622028152. Its totient is φ = 1008330752000.

The previous prime is 1123442323397. The next prime is 1123442323447. The reversal of 1123442323421 is 1243232443211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 443270997796 + 680171325625 = 665786^2 + 824725^2 .

It is not a de Polignac number, because 1123442323421 - 2¹⁰ = 1123442322397 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 (1123442323121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4183805 + ... + 4444221.

It is an arithmetic number, because the mean of its divisors is an integer number (52109251173).

Almost surely, 2^{1123442323421} is an apocalyptic number.

1123442323421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123442323421 is a deficient number, since it is larger than the sum of its proper divisors (127179704731).

1123442323421 is a wasteful number, since it uses less digits than its factorization.

1123442323421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260893 (or 260882 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

Adding to 1123442323421 its reverse (1243232443211), we get a palindrome (2366674766632).

The spelling of 1123442323421 in words is "one trillion, one hundred twenty-three billion, four hundred forty-two million, three hundred twenty-three thousand, four hundred twenty-one".