11404100421 has 24 divisors (see below), whose sum is σ = 18906638400. Its totient is φ = 6488652096.

The previous prime is 11404100401. The next prime is 11404100437. The reversal of 11404100421 is 12400140411.

11404100421 is a `hidden beast` number, since 1 + 140 + 4 + 100 + 421 = 666.

It is not a de Polignac number, because 11404100421 - 2⁹ = 11404099909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11404100394 and 11404100403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11404100401) 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, 373771 + ... + 403128.

It is an arithmetic number, because the mean of its divisors is an integer number (787776600).

Almost surely, 2^11404100421 is an apocalyptic number.

It is an amenable number.

11404100421 is a deficient number, since it is larger than the sum of its proper divisors (7502537979).

11404100421 is a wasteful number, since it uses less digits than its factorization.

11404100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777145 (or 777142 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11404100421 its reverse (12400140411), we get a palindrome (23804240832).

The spelling of 11404100421 in words is "eleven billion, four hundred four million, one hundred thousand, four hundred twenty-one".