12404021211 has 16 divisors (see below), whose sum is σ = 18391232800. Its totient is φ = 8262640224.

The previous prime is 12404021183. The next prime is 12404021221. The reversal of 12404021211 is 11212040421.

12404021211 is a `hidden beast` number, since 1 + 240 + 402 + 1 + 21 + 1 = 666.

It is not a de Polignac number, because 12404021211 - 2¹³ = 12404013019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404021221) 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, 152296 + ... + 219093.

It is an arithmetic number, because the mean of its divisors is an integer number (1149452050).

Almost surely, 2^12404021211 is an apocalyptic number.

12404021211 is a deficient number, since it is larger than the sum of its proper divisors (5987211589).

12404021211 is a wasteful number, since it uses less digits than its factorization.

12404021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372635 (or 372629 counting only the distinct ones).

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

Adding to 12404021211 its reverse (11212040421), we get a palindrome (23616061632).

The spelling of 12404021211 in words is "twelve billion, four hundred four million, twenty-one thousand, two hundred eleven".