201112123210020 has 144 divisors (see below), whose sum is σ = 683484739374528. Its totient is φ = 47436766145280.

The previous prime is 201112123209847. The next prime is 201112123210021. The reversal of 201112123210020 is 20012321211102.

201112123210020 is a `hidden beast` number, since 2 + 0 + 111 + 212 + 321 + 0 + 0 + 20 = 666.

It is a super-2 number, since 2×201112123210020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201112123209975 and 201112123210002.

It is not an unprimeable number, because it can be changed into a prime (201112123210021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1372518354 + ... + 1372664873.

It is an arithmetic number, because the mean of its divisors is an integer number (4746421801212).

Almost surely, 2^{201112123210020} is an apocalyptic number.

201112123210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201112123210020 is an abundant number, since it is smaller than the sum of its proper divisors (482372616164508).

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

201112123210020 is a wasteful number, since it uses less digits than its factorization.

201112123210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745183290 (or 2745183285 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201112123210020 its reverse (20012321211102), we get a palindrome (221124444421122).

The spelling of 201112123210020 in words is "two hundred one trillion, one hundred twelve billion, one hundred twenty-three million, two hundred ten thousand, twenty".