11343311421 has 16 divisors (see below), whose sum is σ = 17245940544. Its totient is φ = 6569881344.

The previous prime is 11343311351. The next prime is 11343311437. The reversal of 11343311421 is 12411334311.

It is a happy number.

It is not a de Polignac number, because 11343311421 - 2⁷ = 11343311293 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11343311391 and 11343311400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11343311461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8553871 + ... + 8555196.

It is an arithmetic number, because the mean of its divisors is an integer number (1077871284).

Almost surely, 2^11343311421 is an apocalyptic number.

It is an amenable number.

11343311421 is a deficient number, since it is larger than the sum of its proper divisors (5902629123).

11343311421 is a wasteful number, since it uses less digits than its factorization.

11343311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17109100.

The product of its digits is 864, while the sum is 24.

Adding to 11343311421 its reverse (12411334311), we get a palindrome (23754645732).

The spelling of 11343311421 in words is "eleven billion, three hundred forty-three million, three hundred eleven thousand, four hundred twenty-one".