1320021200244 has 48 divisors (see below), whose sum is σ = 3146474032128. Its totient is φ = 430523150688.

The previous prime is 1320021200177. The next prime is 1320021200257. The reversal of 1320021200244 is 4420021200231.

It is a super-2 number, since 2×1320021200244² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1320021200244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1670587 + ... + 2330429.

It is an arithmetic number, because the mean of its divisors is an integer number (65551542336).

Almost surely, 2^{1320021200244} is an apocalyptic number.

It is an amenable number.

1320021200244 is an abundant number, since it is smaller than the sum of its proper divisors (1826452831884).

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

1320021200244 is a wasteful number, since it uses less digits than its factorization.

1320021200244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663444 (or 663442 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1320021200244 its reverse (4420021200231), we get a palindrome (5740042400475).

The spelling of 1320021200244 in words is "one trillion, three hundred twenty billion, twenty-one million, two hundred thousand, two hundred forty-four".