11211120211061 has 2 divisors, whose sum is σ = 11211120211062. Its totient is φ = 11211120211060.

The previous prime is 11211120210967. The next prime is 11211120211087. The reversal of 11211120211061 is 16011202111211.

11211120211061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10233185134225 + 977935076836 = 3198935^2 + 988906^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211120211061 - 2³⁴ = 11193940341877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211120211091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605560105530 + 5605560105531.

It is an arithmetic number, because the mean of its divisors is an integer number (5605560105531).

Almost surely, 2^{11211120211061} is an apocalyptic number.

It is an amenable number.

11211120211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211120211061 is an equidigital number, since it uses as much as digits as its factorization.

11211120211061 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 11211120211061 its reverse (16011202111211), we get a palindrome (27222322322272).

The spelling of 11211120211061 in words is "eleven trillion, two hundred eleven billion, one hundred twenty million, two hundred eleven thousand, sixty-one".