11142223061 has 2 divisors, whose sum is σ = 11142223062. Its totient is φ = 11142223060.

The previous prime is 11142223009. The next prime is 11142223073. The reversal of 11142223061 is 16032224111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10592320561 + 549902500 = 102919^2 + 23450^2 .

It is a cyclic number.

It is not a de Polignac number, because 11142223061 - 2⁶ = 11142222997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11142222061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571111530 + 5571111531.

It is an arithmetic number, because the mean of its divisors is an integer number (5571111531).

Almost surely, 2^11142223061 is an apocalyptic number.

It is an amenable number.

11142223061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11142223061 is an equidigital number, since it uses as much as digits as its factorization.

11142223061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 11142223061 its reverse (16032224111), we get a palindrome (27174447172).

The spelling of 11142223061 in words is "eleven billion, one hundred forty-two million, two hundred twenty-three thousand, sixty-one".