211020011201211 has 4 divisors (see below), whose sum is σ = 281360014934952. Its totient is φ = 140680007467472.

The previous prime is 211020011201177. The next prime is 211020011201299. The reversal of 211020011201211 is 112102110020112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211020011201211 - 2³⁰ = 211018937459387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211020011201011) 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, 35170001866866 + ... + 35170001866871.

It is an arithmetic number, because the mean of its divisors is an integer number (70340003733738).

Almost surely, 2^{211020011201211} is an apocalyptic number.

211020011201211 is a deficient number, since it is larger than the sum of its proper divisors (70340003733741).

211020011201211 is an equidigital number, since it uses as much as digits as its factorization.

211020011201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70340003733740.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211020011201211 its reverse (112102110020112), we get a palindrome (323122121221323).

The spelling of 211020011201211 in words is "two hundred eleven trillion, twenty billion, eleven million, two hundred one thousand, two hundred eleven".