1233423052421 has 24 divisors (see below), whose sum is σ = 1510475832000. Its totient is φ = 1001469256704.

The previous prime is 1233423052399. The next prime is 1233423052441. The reversal of 1233423052421 is 1242503243321.

It is not a de Polignac number, because 1233423052421 - 2¹⁴ = 1233423036037 is a prime.

It is a super-2 number, since 2×1233423052421² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233423052441) 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 23 ways as a sum of consecutive naturals, for example, 9280325 + ... + 9412293.

It is an arithmetic number, because the mean of its divisors is an integer number (62936493000).

Almost surely, 2^{1233423052421} is an apocalyptic number.

It is an amenable number.

1233423052421 is a deficient number, since it is larger than the sum of its proper divisors (277052779579).

1233423052421 is a wasteful number, since it uses less digits than its factorization.

1233423052421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142041 (or 142034 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 1233423052421 its reverse (1242503243321), we get a palindrome (2475926295742).

The spelling of 1233423052421 in words is "one trillion, two hundred thirty-three billion, four hundred twenty-three million, fifty-two thousand, four hundred twenty-one".