11212120983756 has 96 divisors (see below), whose sum is σ = 34333767659520. Its totient is φ = 2758963464000.

The previous prime is 11212120983733. The next prime is 11212120983757. The reversal of 11212120983756 is 65738902121211.

It is a happy number.

It is a super-2 number, since 2×11212120983756² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212120983757) 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 31 ways as a sum of consecutive naturals, for example, 319306920 + ... + 319342031.

It is an arithmetic number, because the mean of its divisors is an integer number (357643413120).

Almost surely, 2^{11212120983756} is an apocalyptic number.

It is an amenable number.

11212120983756 is an abundant number, since it is smaller than the sum of its proper divisors (23121646675764).

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

11212120983756 is a wasteful number, since it uses less digits than its factorization.

11212120983756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638648995 (or 638648993 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 11212120983756 in words is "eleven trillion, two hundred twelve billion, one hundred twenty million, nine hundred eighty-three thousand, seven hundred fifty-six".