211121100121 has 8 divisors (see below), whose sum is σ = 212076633600. Its totient is φ = 210167015520.

The previous prime is 211121100061. The next prime is 211121100191. The reversal of 211121100121 is 121001121112.

It is a happy number.

211121100121 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 not a de Polignac number, because 211121100121 - 2¹¹ = 211121098073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121100191) 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 7 ways as a sum of consecutive naturals, for example, 69601 + ... + 653518.

It is an arithmetic number, because the mean of its divisors is an integer number (26509579200).

Almost surely, 2^211121100121 is an apocalyptic number.

It is an amenable number.

211121100121 is a deficient number, since it is larger than the sum of its proper divisors (955533479).

211121100121 is a wasteful number, since it uses less digits than its factorization.

211121100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724439.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211121100121 its reverse (121001121112), we get a palindrome (332122221233).

The spelling of 211121100121 in words is "two hundred eleven billion, one hundred twenty-one million, one hundred thousand, one hundred twenty-one".