1224105551668 has 24 divisors (see below), whose sum is σ = 2151611569800. Its totient is φ = 609360660480.

The previous prime is 1224105551663. The next prime is 1224105551681. The reversal of 1224105551668 is 8661555014221.

It can be written as a sum of positive squares in 4 ways, for example, as 483383686564 + 740721865104 = 695258^2 + 860652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224105551663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3746430 + ... + 4060042.

It is an arithmetic number, because the mean of its divisors is an integer number (89650482075).

Almost surely, 2^{1224105551668} is an apocalyptic number.

It is an amenable number.

1224105551668 is a deficient number, since it is larger than the sum of its proper divisors (927506018132).

1224105551668 is a wasteful number, since it uses less digits than its factorization.

1224105551668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317907 (or 317905 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 1224105551668 in words is "one trillion, two hundred twenty-four billion, one hundred five million, five hundred fifty-one thousand, six hundred sixty-eight".