201111012111020 has 48 divisors (see below), whose sum is σ = 462910586535936. Its totient is φ = 72784683384000.

The previous prime is 201111012111019. The next prime is 201111012111041. The reversal of 201111012111020 is 20111210111102.

It is a super-3 number, since 3×201111012111020³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201111012110986 and 201111012111004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166164396 + ... + 2166257235.

It is an arithmetic number, because the mean of its divisors is an integer number (9643970552832).

Almost surely, 2^{201111012111020} is an apocalyptic number.

201111012111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111012111020 is an abundant number, since it is smaller than the sum of its proper divisors (261799574424916).

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

201111012111020 is a wasteful number, since it uses less digits than its factorization.

201111012111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332421862 (or 4332421860 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201111012111020 its reverse (20111210111102), we get a palindrome (221222222222122).

The spelling of 201111012111020 in words is "two hundred one trillion, one hundred eleven billion, twelve million, one hundred eleven thousand, twenty".