1011000121111 has 2 divisors, whose sum is σ = 1011000121112. Its totient is φ = 1011000121110.

The previous prime is 1011000121067. The next prime is 1011000121169. The reversal of 1011000121111 is 1111210001101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011000121111 - 2²⁵ = 1010966566679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011000131111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505500060555 + 505500060556.

It is an arithmetic number, because the mean of its divisors is an integer number (505500060556).

Almost surely, 2^{1011000121111} is an apocalyptic number.

1011000121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011000121111 is an equidigital number, since it uses as much as digits as its factorization.

1011000121111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1011000121111 its reverse (1111210001101), we get a palindrome (2122210122212).

The spelling of 1011000121111 in words is "one trillion, eleven billion, one hundred twenty-one thousand, one hundred eleven".