11211021212012 has 12 divisors (see below), whose sum is σ = 19619455796136. Its totient is φ = 5605462413120.

The previous prime is 11211021211997. The next prime is 11211021212023. The reversal of 11211021212012 is 21021212011211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11522258 + ... + 12457305.

It is an arithmetic number, because the mean of its divisors is an integer number (1634954649678).

Almost surely, 2^{11211021212012} is an apocalyptic number.

It is an amenable number.

11211021212012 is a deficient number, since it is larger than the sum of its proper divisors (8408434584124).

11211021212012 is a wasteful number, since it uses less digits than its factorization.

11211021212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24096448 (or 24096446 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211021212012 its reverse (21021212011211), we get a palindrome (32232233223223).

The spelling of 11211021212012 in words is "eleven trillion, two hundred eleven billion, twenty-one million, two hundred twelve thousand, twelve".