102111210211 has 4 divisors (see below), whose sum is σ = 102113393400. Its totient is φ = 102109027024.

The previous prime is 102111210203. The next prime is 102111210221. The reversal of 102111210211 is 112012111201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102111210211 - 2³ = 102111210203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102111210191 and 102111210200.

It is not an unprimeable number, because it can be changed into a prime (102111210221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019866 + ... + 1115503.

It is an arithmetic number, because the mean of its divisors is an integer number (25528348350).

Almost surely, 2^102111210211 is an apocalyptic number.

102111210211 is a deficient number, since it is larger than the sum of its proper divisors (2183189).

102111210211 is an equidigital number, since it uses as much as digits as its factorization.

102111210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183188.

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

Adding to 102111210211 its reverse (112012111201), we get a palindrome (214123321412).

The spelling of 102111210211 in words is "one hundred two billion, one hundred eleven million, two hundred ten thousand, two hundred eleven".