11212012011 has 16 divisors (see below), whose sum is σ = 15024372480. Its totient is φ = 7437242400.

The previous prime is 11212012001. The next prime is 11212012033. The reversal of 11212012011 is 11021021211.

It is not a de Polignac number, because 11212012011 - 2⁷ = 11212011883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212012001) 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 15 ways as a sum of consecutive naturals, for example, 585730 + ... + 604568.

It is an arithmetic number, because the mean of its divisors is an integer number (939023280).

Almost surely, 2^11212012011 is an apocalyptic number.

11212012011 is a deficient number, since it is larger than the sum of its proper divisors (3812360469).

11212012011 is a wasteful number, since it uses less digits than its factorization.

11212012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19826.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11212012011 its reverse (11021021211), we get a palindrome (22233033222).

The spelling of 11212012011 in words is "eleven billion, two hundred twelve million, twelve thousand, eleven".