201101212201121 has 4 divisors (see below), whose sum is σ = 201328959894192. Its totient is φ = 200873464508052.

The previous prime is 201101212201093. The next prime is 201101212201157. The reversal of 201101212201121 is 121102212101102.

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-201101212201121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201101212201121.

It is not an unprimeable number, because it can be changed into a prime (201101212203121) 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, 113873845211 + ... + 113873846976.

It is an arithmetic number, because the mean of its divisors is an integer number (50332239973548).

Almost surely, 2^{201101212201121} is an apocalyptic number.

It is an amenable number.

201101212201121 is a deficient number, since it is larger than the sum of its proper divisors (227747693071).

201101212201121 is an equidigital number, since it uses as much as digits as its factorization.

201101212201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227747693070.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201101212201121 its reverse (121102212101102), we get a palindrome (322203424302223).

The spelling of 201101212201121 in words is "two hundred one trillion, one hundred one billion, two hundred twelve million, two hundred one thousand, one hundred twenty-one".