211121101110221 has 8 divisors (see below), whose sum is σ = 213220751126784. Its totient is φ = 209031819736320.

The previous prime is 211121101110181. The next prime is 211121101110239. The reversal of 211121101110221 is 122011101121112.

211121101110221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211121101110221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211121101110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121101110721) 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, 2592119741 + ... + 2592201186.

It is an arithmetic number, because the mean of its divisors is an integer number (26652593890848).

Almost surely, 2^{211121101110221} is an apocalyptic number.

It is an amenable number.

211121101110221 is a deficient number, since it is larger than the sum of its proper divisors (2099650016563).

211121101110221 is a wasteful number, since it uses less digits than its factorization.

211121101110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184321331.

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

Adding to 211121101110221 its reverse (122011101121112), we get a palindrome (333132202231333).

The spelling of 211121101110221 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred one million, one hundred ten thousand, two hundred twenty-one".