11100001200020 has 48 divisors (see below), whose sum is σ = 24765415467408. Its totient is φ = 4164561745920.

The previous prime is 11100001200019. The next prime is 11100001200103. The reversal of 11100001200020 is 2000210000111.

It can be written as a sum of positive squares in 8 ways, for example, as 972929722384 + 10127071477636 = 986372^2 + 3182306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11100001199980 and 11100001200007.

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, 55612091 + ... + 55811330.

It is an arithmetic number, because the mean of its divisors is an integer number (515946155571).

Almost surely, 2^{11100001200020} is an apocalyptic number.

11100001200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100001200020 is an abundant number, since it is smaller than the sum of its proper divisors (13665414267388).

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

11100001200020 is a wasteful number, since it uses less digits than its factorization.

11100001200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111423740 (or 111423738 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11100001200020 its reverse (2000210000111), we get a palindrome (13100211200131).

The spelling of 11100001200020 in words is "eleven trillion, one hundred billion, one million, two hundred thousand, twenty".