1224001686972 has 24 divisors (see below), whose sum is σ = 2883732132736. Its totient is φ = 404039391408.

The previous prime is 1224001686937. The next prime is 1224001686977. The reversal of 1224001686972 is 2796861004221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224001686977) 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, 495145078 + ... + 495147549.

Almost surely, 2^{1224001686972} is an apocalyptic number.

1224001686972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1224001686972 is an abundant number, since it is smaller than the sum of its proper divisors (1659730445764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1224001686972 is a wasteful number, since it uses less digits than its factorization.

1224001686972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990292737 (or 990292735 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 1224001686972 in words is "one trillion, two hundred twenty-four billion, one million, six hundred eighty-six thousand, nine hundred seventy-two".