1224634369661 has 2 divisors, whose sum is σ = 1224634369662. Its totient is φ = 1224634369660.

The previous prime is 1224634369649. The next prime is 1224634369711. The reversal of 1224634369661 is 1669634364221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206330985561 + 18303384100 = 1098331^2 + 135290^2 .

It is an emirp because it is prime and its reverse (1669634364221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224634369661 - 2¹⁸ = 1224634107517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224634369061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612317184830 + 612317184831.

It is an arithmetic number, because the mean of its divisors is an integer number (612317184831).

Almost surely, 2^{1224634369661} is an apocalyptic number.

It is an amenable number.

1224634369661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224634369661 is an equidigital number, since it uses as much as digits as its factorization.

1224634369661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 53.

The spelling of 1224634369661 in words is "one trillion, two hundred twenty-four billion, six hundred thirty-four million, three hundred sixty-nine thousand, six hundred sixty-one".