1224638130681 has 16 divisors (see below), whose sum is σ = 2073461385600. Its totient is φ = 699793217424.

The previous prime is 1224638130629. The next prime is 1224638130689. The reversal of 1224638130681 is 1860318364221.

1224638130681 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 638 + 1 + 3 + 0 + 6 + 8 + 1 = 666.

It is not a de Polignac number, because 1224638130681 - 2¹¹ = 1224638128633 is a prime.

It is a super-2 number, since 2×1224638130681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1224638130689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3239783226 + ... + 3239783603.

It is an arithmetic number, because the mean of its divisors is an integer number (129591336600).

Almost surely, 2^{1224638130681} is an apocalyptic number.

It is an amenable number.

1224638130681 is a deficient number, since it is larger than the sum of its proper divisors (848823254919).

1224638130681 is an equidigital number, since it uses as much as digits as its factorization.

1224638130681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479566845 (or 6479566839 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 1224638130681 in words is "one trillion, two hundred twenty-four billion, six hundred thirty-eight million, one hundred thirty thousand, six hundred eighty-one".