1320444231100 has 18 divisors (see below), whose sum is σ = 2865363981704. Its totient is φ = 528177692400.

The previous prime is 1320444231053. The next prime is 1320444231101. The reversal of 1320444231100 is 11324440231.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320444231101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6602221056 + ... + 6602221255.

Almost surely, 2^{1320444231100} is an apocalyptic number.

1320444231100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320444231100 is an abundant number, since it is smaller than the sum of its proper divisors (1544919750604).

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

1320444231100 is a wasteful number, since it uses less digits than its factorization.

1320444231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13204442325 (or 13204442318 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1320444231100 its reverse (11324440231), we get a palindrome (1331768671331).

The spelling of 1320444231100 in words is "one trillion, three hundred twenty billion, four hundred forty-four million, two hundred thirty-one thousand, one hundred".