11100121020020 has 48 divisors (see below), whose sum is σ = 24161533804800. Its totient is φ = 4280719876224.

The previous prime is 11100121020019. The next prime is 11100121020041. The reversal of 11100121020020 is 2002012100111.

It is a junction number, because it is equal to n+sod(n) for n = 11100121019983 and 11100121020010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88061195 + ... + 88187154.

It is an arithmetic number, because the mean of its divisors is an integer number (503365287600).

Almost surely, 2^{11100121020020} is an apocalyptic number.

11100121020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100121020020 is an abundant number, since it is smaller than the sum of its proper divisors (13061412784780).

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

11100121020020 is a wasteful number, since it uses less digits than its factorization.

11100121020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176248472 (or 176248470 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11100121020020 its reverse (2002012100111), we get a palindrome (13102133120131).

The spelling of 11100121020020 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, twenty thousand, twenty".