211121200110111 has 16 divisors (see below), whose sum is σ = 285684352356480. Its totient is φ = 138668216412960.

The previous prime is 211121200110097. The next prime is 211121200110151. The reversal of 211121200110111 is 111011002121112.

It is not a de Polignac number, because 211121200110111 - 2¹³ = 211121200101919 is a prime.

It is a super-2 number, since 2×211121200110111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121200110151) 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, 1932334120 + ... + 1932443373.

It is an arithmetic number, because the mean of its divisors is an integer number (17855272022280).

Almost surely, 2^{211121200110111} is an apocalyptic number.

211121200110111 is a deficient number, since it is larger than the sum of its proper divisors (74563152246369).

211121200110111 is a wasteful number, since it uses less digits than its factorization.

211121200110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864777766.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 211121200110111 its reverse (111011002121112), we get a palindrome (322132202231223).

The spelling of 211121200110111 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred million, one hundred ten thousand, one hundred eleven".