201021120100120 has 16 divisors (see below), whose sum is σ = 452297520225360. Its totient is φ = 80408448040032.

The previous prime is 201021120100007. The next prime is 201021120100123. The reversal of 201021120100120 is 21001021120102.

It is a self number, because there is not a number n which added to its sum of digits gives 201021120100120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021120100123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512764001212 + ... + 2512764001291.

It is an arithmetic number, because the mean of its divisors is an integer number (28268595014085).

Almost surely, 2^{201021120100120} is an apocalyptic number.

201021120100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021120100120 is an abundant number, since it is smaller than the sum of its proper divisors (251276400125240).

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

201021120100120 is a wasteful number, since it uses less digits than its factorization.

201021120100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025528002514 (or 5025528002510 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201021120100120 its reverse (21001021120102), we get a palindrome (222022141220222).

The spelling of 201021120100120 in words is "two hundred one trillion, twenty-one billion, one hundred twenty million, one hundred thousand, one hundred twenty".