1121430124421 has 2 divisors, whose sum is σ = 1121430124422. Its totient is φ = 1121430124420.

The previous prime is 1121430124387. The next prime is 1121430124447. The reversal of 1121430124421 is 1244210341211.

It is an a-pointer prime, because the next prime (1121430124447) can be obtained adding 1121430124421 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854859271396 + 266570853025 = 924586^2 + 516305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121430124421 - 2⁶ = 1121430124357 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 (1121438124421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560715062210 + 560715062211.

It is an arithmetic number, because the mean of its divisors is an integer number (560715062211).

Almost surely, 2^{1121430124421} is an apocalyptic number.

It is an amenable number.

1121430124421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121430124421 is an equidigital number, since it uses as much as digits as its factorization.

1121430124421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 1121430124421 its reverse (1244210341211), we get a palindrome (2365640465632).

The spelling of 1121430124421 in words is "one trillion, one hundred twenty-one billion, four hundred thirty million, one hundred twenty-four thousand, four hundred twenty-one".