11234231421 has 12 divisors (see below), whose sum is σ = 17424522432. Its totient is φ = 6419560728.

The previous prime is 11234231357. The next prime is 11234231423. The reversal of 11234231421 is 12413243211.

It is not a de Polignac number, because 11234231421 - 2⁶ = 11234231357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11234231391 and 11234231400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11234231423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38211525 + ... + 38211818.

It is an arithmetic number, because the mean of its divisors is an integer number (1452043536).

Almost surely, 2^11234231421 is an apocalyptic number.

It is an amenable number.

11234231421 is a deficient number, since it is larger than the sum of its proper divisors (6190291011).

11234231421 is an equidigital number, since it uses as much as digits as its factorization.

11234231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76423360 (or 76423353 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 11234231421 its reverse (12413243211), we get a palindrome (23647474632).

The spelling of 11234231421 in words is "eleven billion, two hundred thirty-four million, two hundred thirty-one thousand, four hundred twenty-one".