20011103211020 has 48 divisors (see below), whose sum is σ = 43380886348800. Its totient is φ = 7745880154560.

The previous prime is 20011103210929. The next prime is 20011103211061. The reversal of 20011103211020 is 2011230111002.

It is a junction number, because it is equal to n+sod(n) for n = 20011103210986 and 20011103211004.

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, 13075571 + ... + 14525589.

It is an arithmetic number, because the mean of its divisors is an integer number (903768465600).

Almost surely, 2^{20011103211020} is an apocalyptic number.

20011103211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011103211020 is an abundant number, since it is smaller than the sum of its proper divisors (23369783137780).

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

20011103211020 is a wasteful number, since it uses less digits than its factorization.

20011103211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472318 (or 1472316 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20011103211020 its reverse (2011230111002), we get a palindrome (22022333322022).

The spelling of 20011103211020 in words is "twenty trillion, eleven billion, one hundred three million, two hundred eleven thousand, twenty".