1011200011111 has 2 divisors, whose sum is σ = 1011200011112. Its totient is φ = 1011200011110.

The previous prime is 1011200011097. The next prime is 1011200011121. The reversal of 1011200011111 is 1111100021101.

It is an a-pointer prime, because the next prime (1011200011121) can be obtained adding 1011200011111 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011200011111 - 2¹⁵ = 1011199978343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011200011121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600005555 + 505600005556.

It is an arithmetic number, because the mean of its divisors is an integer number (505600005556).

Almost surely, 2^{1011200011111} is an apocalyptic number.

1011200011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011200011111 is an equidigital number, since it uses as much as digits as its factorization.

1011200011111 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 1011200011111 its reverse (1111100021101), we get a palindrome (2122300032212).

The spelling of 1011200011111 in words is "one trillion, eleven billion, two hundred million, eleven thousand, one hundred eleven".