1211120200111 has 2 divisors, whose sum is σ = 1211120200112. Its totient is φ = 1211120200110.

The previous prime is 1211120200093. The next prime is 1211120200141. The reversal of 1211120200111 is 1110020211121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211120200111 - 2⁵ = 1211120200079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211120200091 and 1211120200100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211120200141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605560100055 + 605560100056.

It is an arithmetic number, because the mean of its divisors is an integer number (605560100056).

Almost surely, 2^{1211120200111} is an apocalyptic number.

1211120200111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211120200111 is an equidigital number, since it uses as much as digits as its factorization.

1211120200111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211120200111 its reverse (1110020211121), we get a palindrome (2321140411232).

The spelling of 1211120200111 in words is "one trillion, two hundred eleven billion, one hundred twenty million, two hundred thousand, one hundred eleven".