11212403405121 has 12 divisors (see below), whose sum is σ = 16257274395648. Its totient is φ = 7446513793464.

The previous prime is 11212403405117. The next prime is 11212403405131. The reversal of 11212403405121 is 12150430421211.

11212403405121 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 240 + 3 + 405 + 12 + 1 = 666.

It is not a de Polignac number, because 11212403405121 - 2² = 11212403405117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212403405101) 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 11 ways as a sum of consecutive naturals, for example, 2368481665 + ... + 2368486398.

It is an arithmetic number, because the mean of its divisors is an integer number (1354772866304).

Almost surely, 2^{11212403405121} is an apocalyptic number.

It is an amenable number.

11212403405121 is a deficient number, since it is larger than the sum of its proper divisors (5044870990527).

11212403405121 is a wasteful number, since it uses less digits than its factorization.

11212403405121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736968332 (or 4736968329 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 11212403405121 its reverse (12150430421211), we get a palindrome (23362833826332).

The spelling of 11212403405121 in words is "eleven trillion, two hundred twelve billion, four hundred three million, four hundred five thousand, one hundred twenty-one".