11212104031 has 4 divisors (see below), whose sum is σ = 11323115064. Its totient is φ = 11101093000.

The previous prime is 11212104017. The next prime is 11212104077. The reversal of 11212104031 is 13040121211.

11212104031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11212104031 - 2¹¹ = 11212101983 is a prime.

It is a super-3 number, since 3×11212104031³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212103996 and 11212104014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212104011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55505365 + ... + 55505566.

It is an arithmetic number, because the mean of its divisors is an integer number (2830778766).

Almost surely, 2^11212104031 is an apocalyptic number.

11212104031 is a deficient number, since it is larger than the sum of its proper divisors (111011033).

11212104031 is a wasteful number, since it uses less digits than its factorization.

11212104031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111011032.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11212104031 its reverse (13040121211), we get a palindrome (24252225242).

The spelling of 11212104031 in words is "eleven billion, two hundred twelve million, one hundred four thousand, thirty-one".