1331112303220 has 192 divisors, whose sum is σ = 3252622044672. Its totient is φ = 448201728000.

The previous prime is 1331112303181. The next prime is 1331112303233. The reversal of 1331112303220 is 223032111331.

It is a junction number, because it is equal to n+sod(n) for n = 1331112303191 and 1331112303200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 773451960 + ... + 773453680.

It is an arithmetic number, because the mean of its divisors is an integer number (16940739816).

Almost surely, 2^{1331112303220} is an apocalyptic number.

1331112303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331112303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626311022336).

1331112303220 is an abundant number, since it is smaller than the sum of its proper divisors (1921509741452).

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

1331112303220 is a wasteful number, since it uses less digits than its factorization.

1331112303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282 (or 2280 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1331112303220 its reverse (223032111331), we get a palindrome (1554144414551).

The spelling of 1331112303220 in words is "one trillion, three hundred thirty-one billion, one hundred twelve million, three hundred three thousand, two hundred twenty".