11211121102111 has 48 divisors (see below), whose sum is σ = 13254227707392. Its totient is φ = 9454040064000.

The previous prime is 11211121102067. The next prime is 11211121102169. The reversal of 11211121102111 is 11120112111211.

It is not a de Polignac number, because 11211121102111 - 2⁹ = 11211121101599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211121103111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1634985795 + ... + 1634992651.

It is an arithmetic number, because the mean of its divisors is an integer number (276129743904).

Almost surely, 2^{11211121102111} is an apocalyptic number.

11211121102111 is a deficient number, since it is larger than the sum of its proper divisors (2043106605281).

11211121102111 is a wasteful number, since it uses less digits than its factorization.

11211121102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960 (or 8953 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11211121102111 its reverse (11120112111211), we get a palindrome (22331233213322).

The spelling of 11211121102111 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-one million, one hundred two thousand, one hundred eleven".