211212110112011 has 32 divisors (see below), whose sum is σ = 228451069163520. Its totient is φ = 194810438592000.

The previous prime is 211212110111917. The next prime is 211212110112023. The reversal of 211212110112011 is 110211011212112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211212110112011 is a prime.

It is a super-2 number, since 2×211212110112011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211212110112511) 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, 88436576 + ... + 90793458.

It is an arithmetic number, because the mean of its divisors is an integer number (7139095911360).

Almost surely, 2^{211212110112011} is an apocalyptic number.

211212110112011 is a deficient number, since it is larger than the sum of its proper divisors (17238959051509).

211212110112011 is a wasteful number, since it uses less digits than its factorization.

211212110112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358227.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211212110112011 its reverse (110211011212112), we get a palindrome (321423121324123).

The spelling of 211212110112011 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred ten million, one hundred twelve thousand, eleven".