1201120211117 has 2 divisors, whose sum is σ = 1201120211118. Its totient is φ = 1201120211116.

The previous prime is 1201120211099. The next prime is 1201120211141. The reversal of 1201120211117 is 7111120211021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198173241321 + 2946969796 = 1094611^2 + 54286^2 .

It is an emirp because it is prime and its reverse (7111120211021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201120211117 - 2³² = 1196825243821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201120211917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600560105558 + 600560105559.

It is an arithmetic number, because the mean of its divisors is an integer number (600560105559).

Almost surely, 2^{1201120211117} is an apocalyptic number.

It is an amenable number.

1201120211117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201120211117 is an equidigital number, since it uses as much as digits as its factorization.

1201120211117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 1201120211117 its reverse (7111120211021), we get a palindrome (8312240422138).

The spelling of 1201120211117 in words is "one trillion, two hundred one billion, one hundred twenty million, two hundred eleven thousand, one hundred seventeen".