11121216052056 has 32 divisors (see below), whose sum is σ = 30330589233600. Its totient is φ = 3370065470240.

The previous prime is 11121216051991. The next prime is 11121216052139. The reversal of 11121216052056 is 65025061212111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21062908926 + ... + 21062909453.

It is an arithmetic number, because the mean of its divisors is an integer number (947830913550).

Almost surely, 2^{11121216052056} is an apocalyptic number.

It is an amenable number.

11121216052056 is an abundant number, since it is smaller than the sum of its proper divisors (19209373181544).

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

11121216052056 is a wasteful number, since it uses less digits than its factorization.

11121216052056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42125818399 (or 42125818395 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

Adding to 11121216052056 its reverse (65025061212111), we get a palindrome (76146277264167).

The spelling of 11121216052056 in words is "eleven trillion, one hundred twenty-one billion, two hundred sixteen million, fifty-two thousand, fifty-six".