202101210100120 has 128 divisors (see below), whose sum is σ = 466411977541440. Its totient is φ = 78768366223360.

The previous prime is 202101210100093. The next prime is 202101210100151. The reversal of 202101210100120 is 21001012101202.

It is a self number, because there is not a number n which added to its sum of digits gives 202101210100120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4656366339 + ... + 4656409741.

Almost surely, 2^{202101210100120} is an apocalyptic number.

202101210100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202101210100120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233205988770720).

202101210100120 is an abundant number, since it is smaller than the sum of its proper divisors (264310767441320).

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

202101210100120 is a wasteful number, since it uses less digits than its factorization.

202101210100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47005 (or 47001 counting only the distinct ones).

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

Adding to 202101210100120 its reverse (21001012101202), we get a palindrome (223102222201322).

The spelling of 202101210100120 in words is "two hundred two trillion, one hundred one billion, two hundred ten million, one hundred thousand, one hundred twenty".