211210112011 has 4 divisors (see below), whose sum is σ = 211519351512. Its totient is φ = 210900872512.

The previous prime is 211210111993. The next prime is 211210112039. The reversal of 211210112011 is 110211012112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211210112011 - 2¹⁵ = 211210079243 is a prime.

It is a super-2 number, since 2×211210112011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211210111982 and 211210112000.

It is not an unprimeable number, because it can be changed into a prime (211210110011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154618726 + ... + 154620091.

It is an arithmetic number, because the mean of its divisors is an integer number (52879837878).

Almost surely, 2^211210112011 is an apocalyptic number.

211210112011 is a deficient number, since it is larger than the sum of its proper divisors (309239501).

211210112011 is an equidigital number, since it uses as much as digits as its factorization.

211210112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309239500.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211210112011 its reverse (110211012112), we get a palindrome (321421124123).

The spelling of 211210112011 in words is "two hundred eleven billion, two hundred ten million, one hundred twelve thousand, eleven".