211201022111 has 16 divisors (see below), whose sum is σ = 227546668800. Its totient is φ = 195380797248.

The previous prime is 211201022101. The next prime is 211201022171. The reversal of 211201022111 is 111220102112.

It is a cyclic number.

It is not a de Polignac number, because 211201022111 - 2²⁶ = 211133913247 is a prime.

It is a super-2 number, since 2×211201022111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201022101) 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, 3282710 + ... + 3346428.

It is an arithmetic number, because the mean of its divisors is an integer number (14221666800).

Almost surely, 2^211201022111 is an apocalyptic number.

211201022111 is a deficient number, since it is larger than the sum of its proper divisors (16345646689).

211201022111 is a wasteful number, since it uses less digits than its factorization.

211201022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67838.

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

Adding to 211201022111 its reverse (111220102112), we get a palindrome (322421124223).

The spelling of 211201022111 in words is "two hundred eleven billion, two hundred one million, twenty-two thousand, one hundred eleven".