1012111012111 has 2 divisors, whose sum is σ = 1012111012112. Its totient is φ = 1012111012110.

The previous prime is 1012111012109. The next prime is 1012111012139. The reversal of 1012111012111 is 1112101112101.

1012111012111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012111012111 - 2¹ = 1012111012109 is a prime.

Together with 1012111012109, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1012111012091 and 1012111012100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012111012151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506055506055 + 506055506056.

It is an arithmetic number, because the mean of its divisors is an integer number (506055506056).

Almost surely, 2^{1012111012111} is an apocalyptic number.

1012111012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012111012111 is an equidigital number, since it uses as much as digits as its factorization.

1012111012111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1012111012111 its reverse (1112101112101), we get a palindrome (2124212124212).

The spelling of 1012111012111 in words is "one trillion, twelve billion, one hundred eleven million, twelve thousand, one hundred eleven".