102102120211 has 24 divisors (see below), whose sum is σ = 132034245504. Its totient is φ = 78178141440.

The previous prime is 102102120203. The next prime is 102102120217. The reversal of 102102120211 is 112021201201.

It is not a de Polignac number, because 102102120211 - 2³ = 102102120203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 102102120191 and 102102120200.

It is not an unprimeable number, because it can be changed into a prime (102102120217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2565510 + ... + 2605003.

It is an arithmetic number, because the mean of its divisors is an integer number (5501426896).

Almost surely, 2^102102120211 is an apocalyptic number.

102102120211 is a deficient number, since it is larger than the sum of its proper divisors (29932125293).

102102120211 is a wasteful number, since it uses less digits than its factorization.

102102120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170571 (or 5170564 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102102120211 its reverse (112021201201), we get a palindrome (214123321412).

The spelling of 102102120211 in words is "one hundred two billion, one hundred two million, one hundred twenty thousand, two hundred eleven".