211011111211201 has 16 divisors (see below), whose sum is σ = 248937619783680. Its totient is φ = 175030252385040.

The previous prime is 211011111211181. The next prime is 211011111211207. The reversal of 211011111211201 is 102112111110112.

It is a cyclic number.

It is not a de Polignac number, because 211011111211201 - 2¹⁵ = 211011111178433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211011111211207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13559520 + ... + 24614686.

It is an arithmetic number, because the mean of its divisors is an integer number (15558601236480).

Almost surely, 2^{211011111211201} is an apocalyptic number.

It is an amenable number.

211011111211201 is a deficient number, since it is larger than the sum of its proper divisors (37926508572479).

211011111211201 is a wasteful number, since it uses less digits than its factorization.

211011111211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11143164.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 211011111211201 its reverse (102112111110112), we get a palindrome (313123222321313).

The spelling of 211011111211201 in words is "two hundred eleven trillion, eleven billion, one hundred eleven million, two hundred eleven thousand, two hundred one".