211212112011 has 16 divisors (see below), whose sum is σ = 298194445728. Its totient is φ = 132519628800.

The previous prime is 211212111991. The next prime is 211212112037. The reversal of 211212112011 is 110211212112.

It is a happy number.

It is not a de Polignac number, because 211212112011 - 2⁷ = 211212111883 is a prime.

It is a super-2 number, since 2×211212112011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211212112051) 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, 1358391 + ... + 1505871.

It is an arithmetic number, because the mean of its divisors is an integer number (18637152858).

Almost surely, 2^211212112011 is an apocalyptic number.

211212112011 is a deficient number, since it is larger than the sum of its proper divisors (86982333717).

211212112011 is a wasteful number, since it uses less digits than its factorization.

211212112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175582.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211212112011 its reverse (110211212112), we get a palindrome (321423324123).

The spelling of 211212112011 in words is "two hundred eleven billion, two hundred twelve million, one hundred twelve thousand, eleven".