201021100092 has 36 divisors (see below), whose sum is σ = 508320563296. Its totient is φ = 66982783680.

The previous prime is 201021100061. The next prime is 201021100097. The reversal of 201021100092 is 290001120102.

201021100092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021100097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 909409 + ... + 1108632.

Almost surely, 2^201021100092 is an apocalyptic number.

It is an amenable number.

201021100092 is an abundant number, since it is smaller than the sum of its proper divisors (307299463204).

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

201021100092 is a wasteful number, since it uses less digits than its factorization.

201021100092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020818 (or 2020813 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 201021100092 its reverse (290001120102), we get a palindrome (491022220194).

The spelling of 201021100092 in words is "two hundred one billion, twenty-one million, one hundred thousand, ninety-two".