1243230211151 has 2 divisors, whose sum is σ = 1243230211152. Its totient is φ = 1243230211150.

The previous prime is 1243230211061. The next prime is 1243230211163. The reversal of 1243230211151 is 1511120323421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243230211151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1243230211151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243230211451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621615105575 + 621615105576.

It is an arithmetic number, because the mean of its divisors is an integer number (621615105576).

Almost surely, 2^{1243230211151} is an apocalyptic number.

1243230211151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243230211151 is an equidigital number, since it uses as much as digits as its factorization.

1243230211151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 1243230211151 its reverse (1511120323421), we get a palindrome (2754350534572).

The spelling of 1243230211151 in words is "one trillion, two hundred forty-three billion, two hundred thirty million, two hundred eleven thousand, one hundred fifty-one".