11123404401 has 16 divisors (see below), whose sum is σ = 15346771200. Its totient is φ = 7157958528.

The previous prime is 11123404393. The next prime is 11123404433. The reversal of 11123404401 is 10440432111.

It is not a de Polignac number, because 11123404401 - 2³ = 11123404393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11123404451) 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, 351720 + ... + 382038.

It is an arithmetic number, because the mean of its divisors is an integer number (959173200).

Almost surely, 2^11123404401 is an apocalyptic number.

It is an amenable number.

11123404401 is a deficient number, since it is larger than the sum of its proper divisors (4223366799).

11123404401 is a wasteful number, since it uses less digits than its factorization.

11123404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34568.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11123404401 its reverse (10440432111), we get a palindrome (21563836512).

The spelling of 11123404401 in words is "eleven billion, one hundred twenty-three million, four hundred four thousand, four hundred one".