102001111011 has 24 divisors (see below), whose sum is σ = 149822946000. Its totient is φ = 66860969472.

The previous prime is 102001111007. The next prime is 102001111031. The reversal of 102001111011 is 110111100201.

It is not a de Polignac number, because 102001111011 - 2² = 102001111007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102001110984 and 102001111002.

It is not an unprimeable number, because it can be changed into a prime (102001111031) 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, 212326 + ... + 499083.

It is an arithmetic number, because the mean of its divisors is an integer number (6242622750).

Almost surely, 2^102001111011 is an apocalyptic number.

102001111011 is a deficient number, since it is larger than the sum of its proper divisors (47821834989).

102001111011 is a wasteful number, since it uses less digits than its factorization.

102001111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711683 (or 711680 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 102001111011 its reverse (110111100201), we get a palindrome (212112211212).

It can be divided in two parts, 10200 and 1111011, that added together give a palindrome (1121211).

The spelling of 102001111011 in words is "one hundred two billion, one million, one hundred eleven thousand, eleven".