211121201201 has 4 divisors (see below), whose sum is σ = 212783572992. Its totient is φ = 209458829412.

The previous prime is 211121201191. The next prime is 211121201243. The reversal of 211121201201 is 102102121112.

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 211121201201 - 2¹⁰ = 211121200177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121204201) 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, 831185705 + ... + 831185958.

It is an arithmetic number, because the mean of its divisors is an integer number (53195893248).

Almost surely, 2^211121201201 is an apocalyptic number.

It is an amenable number.

211121201201 is a deficient number, since it is larger than the sum of its proper divisors (1662371791).

211121201201 is a wasteful number, since it uses less digits than its factorization.

211121201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662371790.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211121201201 its reverse (102102121112), we get a palindrome (313223322313).

The spelling of 211121201201 in words is "two hundred eleven billion, one hundred twenty-one million, two hundred one thousand, two hundred one".