12103021021111 has 2 divisors, whose sum is σ = 12103021021112. Its totient is φ = 12103021021110.

The previous prime is 12103021021097. The next prime is 12103021021121. The reversal of 12103021021111 is 11112012030121.

It is a happy number.

12103021021111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12103021021111 - 2⁹ = 12103021020599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12103021021121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051510510555 + 6051510510556.

It is an arithmetic number, because the mean of its divisors is an integer number (6051510510556).

Almost surely, 2^{12103021021111} is an apocalyptic number.

12103021021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103021021111 is an equidigital number, since it uses as much as digits as its factorization.

12103021021111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12103021021111 its reverse (11112012030121), we get a palindrome (23215033051232).

The spelling of 12103021021111 in words is "twelve trillion, one hundred three billion, twenty-one million, twenty-one thousand, one hundred eleven".