1211112341 has 2 divisors, whose sum is σ = 1211112342. Its totient is φ = 1211112340.

The previous prime is 1211112337. The next prime is 1211112347. The reversal of 1211112341 is 1432111121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209300625 + 1811716 = 34775^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211112341 - 2² = 1211112337 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 (1211112347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605556170 + 605556171.

It is an arithmetic number, because the mean of its divisors is an integer number (605556171).

Almost surely, 2^1211112341 is an apocalyptic number.

It is an amenable number.

1211112341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211112341 is an equidigital number, since it uses as much as digits as its factorization.

1211112341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 17.

The square root of 1211112341 is about 34801.0393666626. The cubic root of 1211112341 is about 1065.9286692811.

Adding to 1211112341 its reverse (1432111121), we get a palindrome (2643223462).

The spelling of 1211112341 in words is "one billion, two hundred eleven million, one hundred twelve thousand, three hundred forty-one".