211031103113221 has 8 divisors (see below), whose sum is σ = 211487605800320. Its totient is φ = 210574603495872.

The previous prime is 211031103113203. The next prime is 211031103113263. The reversal of 211031103113221 is 122311301130112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211031103113221 - 2⁵ = 211031103113189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211031103113192 and 211031103113201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211031103110221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185916226 + ... + 187047868.

It is an arithmetic number, because the mean of its divisors is an integer number (26435950725040).

Almost surely, 2^{211031103113221} is an apocalyptic number.

It is an amenable number.

211031103113221 is a deficient number, since it is larger than the sum of its proper divisors (456502687099).

211031103113221 is a wasteful number, since it uses less digits than its factorization.

211031103113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534875.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 211031103113221 its reverse (122311301130112), we get a palindrome (333342404243333).

The spelling of 211031103113221 in words is "two hundred eleven trillion, thirty-one billion, one hundred three million, one hundred thirteen thousand, two hundred twenty-one".