11211122011012 has 72 divisors (see below), whose sum is σ = 25117758560160. Its totient is φ = 4329314922240.

The previous prime is 11211122011007. The next prime is 11211122011081. The reversal of 11211122011012 is 21011022111211.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22765062 + ... + 23252317.

It is an arithmetic number, because the mean of its divisors is an integer number (348857757780).

Almost surely, 2^{11211122011012} is an apocalyptic number.

It is an amenable number.

11211122011012 is an abundant number, since it is smaller than the sum of its proper divisors (13906636549148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211122011012 is a wasteful number, since it uses less digits than its factorization.

11211122011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46017521 (or 46017512 counting only the distinct ones).

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

Adding to 11211122011012 its reverse (21011022111211), we get a palindrome (32222144122223).

The spelling of 11211122011012 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-two million, eleven thousand, twelve".