201121012221121 has 8 divisors (see below), whose sum is σ = 212951831583744. Its totient is φ = 189290211923520.

The previous prime is 201121012221067. The next prime is 201121012221191. The reversal of 201121012221121 is 121122210121102.

It is a happy number.

201121012221121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201121012221121 - 2⁷ = 201121012220993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121012221191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20902456 + ... + 28968166.

It is an arithmetic number, because the mean of its divisors is an integer number (26618978947968).

Almost surely, 2^{201121012221121} is an apocalyptic number.

It is an amenable number.

201121012221121 is a deficient number, since it is larger than the sum of its proper divisors (11830819362623).

201121012221121 is a wasteful number, since it uses less digits than its factorization.

201121012221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532511.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201121012221121 its reverse (121122210121102), we get a palindrome (322243222342223).

The spelling of 201121012221121 in words is "two hundred one trillion, one hundred twenty-one billion, twelve million, two hundred twenty-one thousand, one hundred twenty-one".