11112220221020 has 24 divisors (see below), whose sum is σ = 23340695150304. Its totient is φ = 4443929481536.

The previous prime is 11112220221001. The next prime is 11112220221097. The reversal of 11112220221020 is 2012202221111.

11112220221020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11112220221020.

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, 59817872 + ... + 60003351.

It is an arithmetic number, because the mean of its divisors is an integer number (972528964596).

Almost surely, 2^{11112220221020} is an apocalyptic number.

11112220221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112220221020 is an abundant number, since it is smaller than the sum of its proper divisors (12228474929284).

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

11112220221020 is a wasteful number, since it uses less digits than its factorization.

11112220221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119825869 (or 119825867 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11112220221020 its reverse (2012202221111), we get a palindrome (13124422442131).

The spelling of 11112220221020 in words is "eleven trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-one thousand, twenty".