20111122201020 has 96 divisors (see below), whose sum is σ = 57107019816000. Its totient is φ = 5287513380864.

The previous prime is 20111122201019. The next prime is 20111122201031. The reversal of 20111122201020 is 2010222111102.

20111122201020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3531939 + ... + 7259258.

It is an arithmetic number, because the mean of its divisors is an integer number (594864789750).

Almost surely, 2^{20111122201020} is an apocalyptic number.

20111122201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111122201020 is an abundant number, since it is smaller than the sum of its proper divisors (36995897614980).

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

20111122201020 is a wasteful number, since it uses less digits than its factorization.

20111122201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10791647 (or 10791645 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20111122201020 its reverse (2010222111102), we get a palindrome (22121344312122).

The spelling of 20111122201020 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, two hundred one thousand, twenty".