12111321404 has 24 divisors (see below), whose sum is σ = 26085923808. Its totient is φ = 4791291840.

The previous prime is 12111321377. The next prime is 12111321413. The reversal of 12111321404 is 40412311121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16636067 + ... + 16636794.

It is an arithmetic number, because the mean of its divisors is an integer number (1086913492).

Almost surely, 2^12111321404 is an apocalyptic number.

12111321404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12111321404 is an abundant number, since it is smaller than the sum of its proper divisors (13974602404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111321404 is a wasteful number, since it uses less digits than its factorization.

12111321404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33272885 (or 33272883 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12111321404 its reverse (40412311121), we get a palindrome (52523632525).

The spelling of 12111321404 in words is "twelve billion, one hundred eleven million, three hundred twenty-one thousand, four hundred four".