211100202112111 has 32 divisors (see below), whose sum is σ = 242281978142400. Its totient is φ = 182317657420800.

The previous prime is 211100202112091. The next prime is 211100202112139. The reversal of 211100202112111 is 111211202001112.

It is a cyclic number.

It is not a de Polignac number, because 211100202112111 - 2¹³ = 211100202103919 is a prime.

It is a super-2 number, since 2×211100202112111² (a number of 29 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 (211100202112511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753406 + ... + 20561323.

It is an arithmetic number, because the mean of its divisors is an integer number (7571311816950).

Almost surely, 2^{211100202112111} is an apocalyptic number.

211100202112111 is a deficient number, since it is larger than the sum of its proper divisors (31181776030289).

211100202112111 is a wasteful number, since it uses less digits than its factorization.

211100202112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21315259.

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

Adding to 211100202112111 its reverse (111211202001112), we get a palindrome (322311404113223).

The spelling of 211100202112111 in words is "two hundred eleven trillion, one hundred billion, two hundred two million, one hundred twelve thousand, one hundred eleven".