211121110012101 has 16 divisors (see below), whose sum is σ = 289269603688704. Its totient is φ = 136864401568704.

The previous prime is 211121110012073. The next prime is 211121110012147. The reversal of 211121110012101 is 101210011121112.

It is not a de Polignac number, because 211121110012101 - 2⁵ = 211121110012069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121110012201) 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, 548564701 + ... + 548949426.

It is an arithmetic number, because the mean of its divisors is an integer number (18079350230544).

Almost surely, 2^{211121110012101} is an apocalyptic number.

It is an amenable number.

211121110012101 is a deficient number, since it is larger than the sum of its proper divisors (78148493676603).

211121110012101 is a wasteful number, since it uses less digits than its factorization.

211121110012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097515900.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 211121110012101 its reverse (101210011121112), we get a palindrome (312331121133213).

The spelling of 211121110012101 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred ten million, twelve thousand, one hundred one".