102001001111 has 2 divisors, whose sum is σ = 102001001112. Its totient is φ = 102001001110.

The previous prime is 102001001087. The next prime is 102001001131. The reversal of 102001001111 is 111100100201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102001001111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102001001131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000500555 + 51000500556.

It is an arithmetic number, because the mean of its divisors is an integer number (51000500556).

Almost surely, 2^102001001111 is an apocalyptic number.

102001001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

102001001111 is an equidigital number, since it uses as much as digits as its factorization.

102001001111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 102001001111 its reverse (111100100201), we get a palindrome (213101101312).

The spelling of 102001001111 in words is "one hundred two billion, one million, one thousand, one hundred eleven".