111210201211061 has 2 divisors, whose sum is σ = 111210201211062. Its totient is φ = 111210201211060.

The previous prime is 111210201211019. The next prime is 111210201211063. The reversal of 111210201211061 is 160112102012111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104861061148561 + 6349140062500 = 10240169^2 + 2519750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111210201211061 is a prime.

It is a super-2 number, since 2×111210201211061² (a number of 29 digits) contains 22 as substring.

Together with 111210201211063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111210201211063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605100605530 + 55605100605531.

It is an arithmetic number, because the mean of its divisors is an integer number (55605100605531).

Almost surely, 2^{111210201211061} is an apocalyptic number.

It is an amenable number.

111210201211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210201211061 is an equidigital number, since it uses as much as digits as its factorization.

111210201211061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 111210201211061 its reverse (160112102012111), we get a palindrome (271322303223172).

The spelling of 111210201211061 in words is "one hundred eleven trillion, two hundred ten billion, two hundred one million, two hundred eleven thousand, sixty-one".