11121111011020 has 12 divisors (see below), whose sum is σ = 23354333123184. Its totient is φ = 4448444404400.

The previous prime is 11121111011009. The next prime is 11121111011029. The reversal of 11121111011020 is 2011011112111.

It is a super-2 number, since 2×11121111011020² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11121111011029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278027775256 + ... + 278027775295.

It is an arithmetic number, because the mean of its divisors is an integer number (1946194426932).

Almost surely, 2^{11121111011020} is an apocalyptic number.

11121111011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121111011020 is an abundant number, since it is smaller than the sum of its proper divisors (12233222112164).

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

11121111011020 is a wasteful number, since it uses less digits than its factorization.

11121111011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556055550560 (or 556055550558 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11121111011020 its reverse (2011011112111), we get a palindrome (13132122123131).

The spelling of 11121111011020 in words is "eleven trillion, one hundred twenty-one billion, one hundred eleven million, eleven thousand, twenty".