11113212005 has 64 divisors (see below), whose sum is σ = 16450560000. Its totient is φ = 7184165184.

The previous prime is 11113211999. The next prime is 11113212031. The reversal of 11113212005 is 50021231111.

It is not a de Polignac number, because 11113212005 - 2¹² = 11113207909 is a prime.

It is a super-2 number, since 2×11113212005² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7787102 + ... + 7788528.

It is an arithmetic number, because the mean of its divisors is an integer number (257040000).

Almost surely, 2^11113212005 is an apocalyptic number.

It is an amenable number.

11113212005 is a deficient number, since it is larger than the sum of its proper divisors (5337347995).

11113212005 is a wasteful number, since it uses less digits than its factorization.

11113212005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 11113212005 its reverse (50021231111), we get a palindrome (61134443116).

The spelling of 11113212005 in words is "eleven billion, one hundred thirteen million, two hundred twelve thousand, five".