1200101011111 has 2 divisors, whose sum is σ = 1200101011112. Its totient is φ = 1200101011110.

The previous prime is 1200101011019. The next prime is 1200101011117. The reversal of 1200101011111 is 1111101010021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200101011111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200101011117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600050505555 + 600050505556.

It is an arithmetic number, because the mean of its divisors is an integer number (600050505556).

Almost surely, 2^{1200101011111} is an apocalyptic number.

1200101011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200101011111 is an equidigital number, since it uses as much as digits as its factorization.

1200101011111 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 1200101011111 its reverse (1111101010021), we get a palindrome (2311202021132).

The spelling of 1200101011111 in words is "one trillion, two hundred billion, one hundred one million, eleven thousand, one hundred eleven".