20111000211020 has 24 divisors (see below), whose sum is σ = 42233245541424. Its totient is φ = 8044372446656.

The previous prime is 20111000211019. The next prime is 20111000211031. The reversal of 20111000211020 is 2011200011102.

20111000211020 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 20111000210992 and 20111000211010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4850414 + ... + 7984266.

It is an arithmetic number, because the mean of its divisors is an integer number (1759718564226).

Almost surely, 2^{20111000211020} is an apocalyptic number.

20111000211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111000211020 is an abundant number, since it is smaller than the sum of its proper divisors (22122245330404).

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

20111000211020 is a wasteful number, since it uses less digits than its factorization.

20111000211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454729 (or 3454727 counting only the distinct ones).

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

Adding to 20111000211020 its reverse (2011200011102), we get a palindrome (22122200222122).

The spelling of 20111000211020 in words is "twenty trillion, one hundred eleven billion, two hundred eleven thousand, twenty".