211001231212211 has 128 divisors (see below), whose sum is σ = 246960248371200. Its totient is φ = 178513251840000.

The previous prime is 211001231212181. The next prime is 211001231212231. The reversal of 211001231212211 is 112212132100112.

It is not a de Polignac number, because 211001231212211 - 2¹⁰ = 211001231211187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211001231212231) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 53458632740 + ... + 53458636686.

It is an arithmetic number, because the mean of its divisors is an integer number (1929376940400).

Almost surely, 2^{211001231212211} is an apocalyptic number.

211001231212211 is a deficient number, since it is larger than the sum of its proper divisors (35959017158989).

211001231212211 is a wasteful number, since it uses less digits than its factorization.

211001231212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 211001231212211 its reverse (112212132100112), we get a palindrome (323213363312323).

The spelling of 211001231212211 in words is "two hundred eleven trillion, one billion, two hundred thirty-one million, two hundred twelve thousand, two hundred eleven".