11002221111120 has 160 divisors (see below), whose sum is σ = 34590806403840. Its totient is φ = 2892306493440.

The previous prime is 11002221111109. The next prime is 11002221111137. The reversal of 11002221111120 is 2111112220011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11002221111120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202902252 + ... + 202956468.

It is an arithmetic number, because the mean of its divisors is an integer number (216192540024).

Almost surely, 2^{11002221111120} is an apocalyptic number.

11002221111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11002221111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17295403201920).

11002221111120 is an abundant number, since it is smaller than the sum of its proper divisors (23588585292720).

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

11002221111120 is a wasteful number, since it uses less digits than its factorization.

11002221111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66213 (or 66207 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11002221111120 its reverse (2111112220011), we get a palindrome (13113333331131).

The spelling of 11002221111120 in words is "eleven trillion, two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twenty".