201022112002121 has 4 divisors (see below), whose sum is σ = 201056539497600. Its totient is φ = 200987684506644.

The previous prime is 201022112002031. The next prime is 201022112002169. The reversal of 201022112002121 is 121200211220102.

201022112002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201022112002121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201022112002121.

It is not an unprimeable number, because it can be changed into a prime (201022112002321) 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, 17213738981 + ... + 17213750658.

It is an arithmetic number, because the mean of its divisors is an integer number (50264134874400).

Almost surely, 2^{201022112002121} is an apocalyptic number.

It is an amenable number.

201022112002121 is a deficient number, since it is larger than the sum of its proper divisors (34427495479).

201022112002121 is an equidigital number, since it uses as much as digits as its factorization.

201022112002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34427495478.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201022112002121 its reverse (121200211220102), we get a palindrome (322222323222223).

The spelling of 201022112002121 in words is "two hundred one trillion, twenty-two billion, one hundred twelve million, two thousand, one hundred twenty-one".