201121112201020 has 24 divisors (see below), whose sum is σ = 460750184315568. Its totient is φ = 73134949891200.

The previous prime is 201121112201017. The next prime is 201121112201041. The reversal of 201121112201020 is 20102211121102.

It is a junction number, because it is equal to n+sod(n) for n = 201121112200985 and 201121112201003.

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, 457093436601 + ... + 457093437040.

It is an arithmetic number, because the mean of its divisors is an integer number (19197924346482).

Almost surely, 2^{201121112201020} is an apocalyptic number.

201121112201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121112201020 is an abundant number, since it is smaller than the sum of its proper divisors (259629072114548).

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

201121112201020 is a wasteful number, since it uses less digits than its factorization.

201121112201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914186873661 (or 914186873659 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201121112201020 its reverse (20102211121102), we get a palindrome (221223323322122).

The spelling of 201121112201020 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twelve million, two hundred one thousand, twenty".