11111022011120 has 80 divisors (see below), whose sum is σ = 25986066606720. Its totient is φ = 4418134382592.

The previous prime is 11111022011113. The next prime is 11111022011123. The reversal of 11111022011120 is 2111022011111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 11111022011095 and 11111022011104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111022011123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18506201 + ... + 19097159.

It is an arithmetic number, because the mean of its divisors is an integer number (324825832584).

Almost surely, 2^{11111022011120} is an apocalyptic number.

11111022011120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111022011120 is an abundant number, since it is smaller than the sum of its proper divisors (14875044595600).

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

11111022011120 is a wasteful number, since it uses less digits than its factorization.

11111022011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592362 (or 592356 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11111022011120 its reverse (2111022011111), we get a palindrome (13222044022231).

Subtracting from 11111022011120 its reverse (2111022011111), we obtain a palindrome (9000000000009).

The spelling of 11111022011120 in words is "eleven trillion, one hundred eleven billion, twenty-two million, eleven thousand, one hundred twenty".