11100021012020 has 48 divisors (see below), whose sum is σ = 23370192413568. Its totient is φ = 4428552965760.

The previous prime is 11100021012019. The next prime is 11100021012053. The reversal of 11100021012020 is 2021012000111.

It is a junction number, because it is equal to n+sod(n) for n = 11100021011992 and 11100021012010.

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, 173941439 + ... + 174005241.

It is an arithmetic number, because the mean of its divisors is an integer number (486879008616).

Almost surely, 2^{11100021012020} is an apocalyptic number.

11100021012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100021012020 is an abundant number, since it is smaller than the sum of its proper divisors (12270171401548).

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

11100021012020 is a wasteful number, since it uses less digits than its factorization.

11100021012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86120 (or 86118 counting only the distinct ones).

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

Adding to 11100021012020 its reverse (2021012000111), we get a palindrome (13121033012131).

The spelling of 11100021012020 in words is "eleven trillion, one hundred billion, twenty-one million, twelve thousand, twenty".