201121222110121 has 16 divisors (see below), whose sum is σ = 207722306608128. Its totient is φ = 194527245412800.

The previous prime is 201121222110103. The next prime is 201121222110131. The reversal of 201121222110121 is 121011222121102.

It is a happy number.

201121222110121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 201121222110121 - 2⁹ = 201121222109609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121222110131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466354836 + ... + 466785898.

It is an arithmetic number, because the mean of its divisors is an integer number (12982644163008).

Almost surely, 2^{201121222110121} is an apocalyptic number.

It is an amenable number.

201121222110121 is a deficient number, since it is larger than the sum of its proper divisors (6601084498007).

201121222110121 is a wasteful number, since it uses less digits than its factorization.

201121222110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439272.

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

Adding to 201121222110121 its reverse (121011222121102), we get a palindrome (322132444231223).

The spelling of 201121222110121 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, one hundred twenty-one".