211112312203221 has 48 divisors (see below), whose sum is σ = 332715549857472. Its totient is φ = 118031925772800.

The previous prime is 211112312203201. The next prime is 211112312203277. The reversal of 211112312203221 is 122302213211112.

It is not a de Polignac number, because 211112312203221 - 2¹¹ = 211112312201173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211112312203191 and 211112312203200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112312203201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2635840 + ... + 20716473.

It is an arithmetic number, because the mean of its divisors is an integer number (6931573955364).

Almost surely, 2^{211112312203221} is an apocalyptic number.

It is an amenable number.

211112312203221 is a deficient number, since it is larger than the sum of its proper divisors (121603237654251).

211112312203221 is a wasteful number, since it uses less digits than its factorization.

211112312203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23353974 (or 23353961 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 211112312203221 its reverse (122302213211112), we get a palindrome (333414525414333).

The spelling of 211112312203221 in words is "two hundred eleven trillion, one hundred twelve billion, three hundred twelve million, two hundred three thousand, two hundred twenty-one".