201111102012020 has 24 divisors (see below), whose sum is σ = 422335594485000. Its totient is φ = 80444006469632.

The previous prime is 201111102012013. The next prime is 201111102012047. The reversal of 201111102012020 is 20210201111102.

It can be written as a sum of positive squares in 4 ways, for example, as 175827585124 + 200935274426896 = 419318^2 + 14175164^2 .

It is a super-2 number, since 2×201111102012020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201111102011986 and 201111102012004.

It is a congruent number.

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, 23336045 + ... + 30770004.

It is an arithmetic number, because the mean of its divisors is an integer number (17597316436875).

Almost surely, 2^{201111102012020} is an apocalyptic number.

201111102012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111102012020 is an abundant number, since it is smaller than the sum of its proper divisors (221224492472980).

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

201111102012020 is a wasteful number, since it uses less digits than its factorization.

201111102012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54291907 (or 54291905 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201111102012020 its reverse (20210201111102), we get a palindrome (221321303123122).

The spelling of 201111102012020 in words is "two hundred one trillion, one hundred eleven billion, one hundred two million, twelve thousand, twenty".