201201111201121 has 4 divisors (see below), whose sum is σ = 201761559979200. Its totient is φ = 200640662423044.

The previous prime is 201201111201119. The next prime is 201201111201203. The reversal of 201201111201121 is 121102111102102.

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 not a de Polignac number, because 201201111201121 - 2¹ = 201201111201119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201201111201095 and 201201111201104.

It is not an unprimeable number, because it can be changed into a prime (201201111205121) 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, 280224388501 + ... + 280224389218.

It is an arithmetic number, because the mean of its divisors is an integer number (50440389994800).

Almost surely, 2^{201201111201121} is an apocalyptic number.

It is an amenable number.

201201111201121 is a deficient number, since it is larger than the sum of its proper divisors (560448778079).

201201111201121 is an equidigital number, since it uses as much as digits as its factorization.

201201111201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560448778078.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 201201111201121 its reverse (121102111102102), we get a palindrome (322303222303223).

The spelling of 201201111201121 in words is "two hundred one trillion, two hundred one billion, one hundred eleven million, two hundred one thousand, one hundred twenty-one".