201112120020 has 72 divisors (see below), whose sum is σ = 655050914784. Its totient is φ = 45968483904.

The previous prime is 201112120007. The next prime is 201112120093. The reversal of 201112120020 is 20021211102.

It is a super-3 number, since 3×201112120020³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 201112119978 and 201112120005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34199802 + ... + 34205681.

It is an arithmetic number, because the mean of its divisors is an integer number (9097929372).

Almost surely, 2^201112120020 is an apocalyptic number.

201112120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201112120020 is an abundant number, since it is smaller than the sum of its proper divisors (453938794764).

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

201112120020 is a wasteful number, since it uses less digits than its factorization.

201112120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68405509 (or 68405500 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201112120020 its reverse (20021211102), we get a palindrome (221133331122).

The spelling of 201112120020 in words is "two hundred one billion, one hundred twelve million, one hundred twenty thousand, twenty".