201122121111121 has 8 divisors (see below), whose sum is σ = 229890753350720. Its totient is φ = 172362714034608.

The previous prime is 201122121111077. The next prime is 201122121111139. The reversal of 201122121111121 is 121111121221102.

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 201122121111121 - 2²¹ = 201122119013969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201122121111161) 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, 2306244051 + ... + 2306331256.

It is an arithmetic number, because the mean of its divisors is an integer number (28736344168840).

Almost surely, 2^{201122121111121} is an apocalyptic number.

It is an amenable number.

201122121111121 is a deficient number, since it is larger than the sum of its proper divisors (28768632239599).

201122121111121 is an equidigital number, since it uses as much as digits as its factorization.

201122121111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612581543.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 201122121111121 its reverse (121111121221102), we get a palindrome (322233242332223).

The spelling of 201122121111121 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".