211102102002121 has 4 divisors (see below), whose sum is σ = 230293202184144. Its totient is φ = 191911001820100.

The previous prime is 211102102002079. The next prime is 211102102002167. The reversal of 211102102002121 is 121200201201112.

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 211102102002121 - 2¹³ = 211102101993929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211102102002095 and 211102102002104.

It is not an unprimeable number, because it can be changed into a prime (211102103002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9595550090995 + ... + 9595550091016.

It is an arithmetic number, because the mean of its divisors is an integer number (57573300546036).

Almost surely, 2^{211102102002121} is an apocalyptic number.

It is an amenable number.

211102102002121 is a deficient number, since it is larger than the sum of its proper divisors (19191100182023).

211102102002121 is a wasteful number, since it uses less digits than its factorization.

211102102002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19191100182022.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211102102002121 its reverse (121200201201112), we get a palindrome (332302303203233).

The spelling of 211102102002121 in words is "two hundred eleven trillion, one hundred two billion, one hundred two million, two thousand, one hundred twenty-one".