11121021111020 has 48 divisors (see below), whose sum is σ = 24584017311840. Its totient is φ = 4214160400896.

The previous prime is 11121021111017. The next prime is 11121021111037. The reversal of 11121021111020 is 2011112012111.

It is a super-2 number, since 2×11121021111020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11121021110986 and 11121021111004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13395974 + ... + 14201906.

It is an arithmetic number, because the mean of its divisors is an integer number (512167027330).

Almost surely, 2^{11121021111020} is an apocalyptic number.

11121021111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121021111020 is an abundant number, since it is smaller than the sum of its proper divisors (13462996200820).

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

11121021111020 is a wasteful number, since it uses less digits than its factorization.

11121021111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842274 (or 842272 counting only the distinct ones).

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

Adding to 11121021111020 its reverse (2011112012111), we get a palindrome (13132133123131).

The spelling of 11121021111020 in words is "eleven trillion, one hundred twenty-one billion, twenty-one million, one hundred eleven thousand, twenty".