211111323101 has 16 divisors (see below), whose sum is σ = 252198710400. Its totient is φ = 176539073760.

The previous prime is 211111323089. The next prime is 211111323119. The reversal of 211111323101 is 101323111112.

It is not a de Polignac number, because 211111323101 - 2¹⁰ = 211111322077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211111323101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211111323001) 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, 7491851 + ... + 7519976.

It is an arithmetic number, because the mean of its divisors is an integer number (15762419400).

Almost surely, 2^211111323101 is an apocalyptic number.

It is an amenable number.

211111323101 is a deficient number, since it is larger than the sum of its proper divisors (41087387299).

211111323101 is an equidigital number, since it uses as much as digits as its factorization.

211111323101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15011889 (or 15011875 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 211111323101 its reverse (101323111112), we get a palindrome (312434434213).

The spelling of 211111323101 in words is "two hundred eleven billion, one hundred eleven million, three hundred twenty-three thousand, one hundred one".