201021101020120 has 64 divisors (see below), whose sum is σ = 471966131808000. Its totient is φ = 76911843262848.

The previous prime is 201021101020111. The next prime is 201021101020163. The reversal of 201021101020120 is 21020101120102.

201021101020120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201021101020120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133626291 + ... + 135122269.

It is an arithmetic number, because the mean of its divisors is an integer number (7374470809500).

Almost surely, 2^{201021101020120} is an apocalyptic number.

201021101020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021101020120 is an abundant number, since it is smaller than the sum of its proper divisors (270945030787880).

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

201021101020120 is a wasteful number, since it uses less digits than its factorization.

201021101020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642072 (or 1642068 counting only the distinct ones).

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

Adding to 201021101020120 its reverse (21020101120102), we get a palindrome (222041202140222).

The spelling of 201021101020120 in words is "two hundred one trillion, twenty-one billion, one hundred one million, twenty thousand, one hundred twenty".