210011100121 has 4 divisors (see below), whose sum is σ = 210022515472. Its totient is φ = 209999684772.

The previous prime is 210011100109. The next prime is 210011100137. The reversal of 210011100121 is 121001110012.

210011100121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210011100121 - 2⁹ = 210011099609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210011100098 and 210011100107.

It is not an unprimeable number, because it can be changed into a prime (210011100191) 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 3 ways as a sum of consecutive naturals, for example, 5680035 + ... + 5716888.

It is an arithmetic number, because the mean of its divisors is an integer number (52505628868).

Almost surely, 2^210011100121 is an apocalyptic number.

It is an amenable number.

210011100121 is a deficient number, since it is larger than the sum of its proper divisors (11415351).

210011100121 is a wasteful number, since it uses less digits than its factorization.

210011100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11415350.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 210011100121 its reverse (121001110012), we get a palindrome (331012210133).

The spelling of 210011100121 in words is "two hundred ten billion, eleven million, one hundred thousand, one hundred twenty-one".