1221124303159 has 2 divisors, whose sum is σ = 1221124303160. Its totient is φ = 1221124303158.

The previous prime is 1221124303141. The next prime is 1221124303183. The reversal of 1221124303159 is 9513034211221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221124303159 - 2¹⁵ = 1221124270391 is a prime.

It is a super-2 number, since 2×1221124303159² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221124303459) 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, 610562151579 + 610562151580.

It is an arithmetic number, because the mean of its divisors is an integer number (610562151580).

Almost surely, 2^{1221124303159} is an apocalyptic number.

1221124303159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221124303159 is an equidigital number, since it uses as much as digits as its factorization.

1221124303159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 1221124303159 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-four million, three hundred three thousand, one hundred fifty-nine".