11434322421 has 16 divisors (see below), whose sum is σ = 16941505600. Its totient is φ = 7622085744.

The previous prime is 11434322401. The next prime is 11434322423. The reversal of 11434322421 is 12422343411.

11434322421 is a `hidden beast` number, since 1 + 1 + 434 + 3 + 224 + 2 + 1 = 666.

It is not a de Polignac number, because 11434322421 - 2⁶ = 11434322357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11434322423) 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 15 ways as a sum of consecutive naturals, for example, 363690 + ... + 393876.

It is an arithmetic number, because the mean of its divisors is an integer number (1058844100).

Almost surely, 2^11434322421 is an apocalyptic number.

It is an amenable number.

11434322421 is a deficient number, since it is larger than the sum of its proper divisors (5507183179).

11434322421 is a wasteful number, since it uses less digits than its factorization.

11434322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44225 (or 44219 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 11434322421 its reverse (12422343411), we get a palindrome (23856665832).

The spelling of 11434322421 in words is "eleven billion, four hundred thirty-four million, three hundred twenty-two thousand, four hundred twenty-one".