1321130103220 has 48 divisors (see below), whose sum is σ = 2801922076800. Its totient is φ = 523223026560.

The previous prime is 1321130103203. The next prime is 1321130103257. The reversal of 1321130103220 is 223010311231.

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, 575866 + ... + 1724494.

It is an arithmetic number, because the mean of its divisors is an integer number (58373376600).

Almost surely, 2^{1321130103220} is an apocalyptic number.

1321130103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321130103220 is an abundant number, since it is smaller than the sum of its proper divisors (1480791973580).

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

1321130103220 is a wasteful number, since it uses less digits than its factorization.

1321130103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149208 (or 1149206 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1321130103220 its reverse (223010311231), we get a palindrome (1544140414451).

The spelling of 1321130103220 in words is "one trillion, three hundred twenty-one billion, one hundred thirty million, one hundred three thousand, two hundred twenty".