1320031021044 has 24 divisors (see below), whose sum is σ = 3130565374048. Its totient is φ = 432797055840.

The previous prime is 1320031020899. The next prime is 1320031021069. The reversal of 1320031021044 is 4401201300231.

It is a self number, because there is not a number n which added to its sum of digits gives 1320031021044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901659802 + ... + 901661265.

Almost surely, 2^{1320031021044} is an apocalyptic number.

It is an amenable number.

1320031021044 is an abundant number, since it is smaller than the sum of its proper divisors (1810534353004).

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

1320031021044 is a wasteful number, since it uses less digits than its factorization.

1320031021044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803321135 (or 1803321133 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1320031021044 its reverse (4401201300231), we get a palindrome (5721232321275).

The spelling of 1320031021044 in words is "one trillion, three hundred twenty billion, thirty-one million, twenty-one thousand, forty-four".