1235123211241 has 2 divisors, whose sum is σ = 1235123211242. Its totient is φ = 1235123211240.

The previous prime is 1235123211239. The next prime is 1235123211251. The reversal of 1235123211241 is 1421123215321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 919527566400 + 315595644841 = 958920^2 + 561779^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235123211241 - 2¹ = 1235123211239 is a prime.

Together with 1235123211239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1235123211221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617561605620 + 617561605621.

It is an arithmetic number, because the mean of its divisors is an integer number (617561605621).

Almost surely, 2^{1235123211241} is an apocalyptic number.

It is an amenable number.

1235123211241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235123211241 is an equidigital number, since it uses as much as digits as its factorization.

1235123211241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

Adding to 1235123211241 its reverse (1421123215321), we get a palindrome (2656246426562).

The spelling of 1235123211241 in words is "one trillion, two hundred thirty-five billion, one hundred twenty-three million, two hundred eleven thousand, two hundred forty-one".