211012111201111 has 8 divisors (see below), whose sum is σ = 230890483669248. Its totient is φ = 191249647611000.

The previous prime is 211012111201093. The next prime is 211012111201117. The reversal of 211012111201111 is 111102111210112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211012111201111 - 2²³ = 211012102812503 is a prime.

It is a super-2 number, since 2×211012111201111² (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 (211012111201117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28977215695 + ... + 28977222976.

It is an arithmetic number, because the mean of its divisors is an integer number (28861310458656).

Almost surely, 2^{211012111201111} is an apocalyptic number.

211012111201111 is a deficient number, since it is larger than the sum of its proper divisors (19878372468137).

211012111201111 is a wasteful number, since it uses less digits than its factorization.

211012111201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57954439013.

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

Adding to 211012111201111 its reverse (111102111210112), we get a palindrome (322114222411223).

Subtracting from 211012111201111 its reverse (111102111210112), we obtain a palindrome (99909999990999).

The spelling of 211012111201111 in words is "two hundred eleven trillion, twelve billion, one hundred eleven million, two hundred one thousand, one hundred eleven".