1331230133220 has 72 divisors (see below), whose sum is σ = 4036226777856. Its totient is φ = 327687414912.

The previous prime is 1331230133197. The next prime is 1331230133251. The reversal of 1331230133220 is 223310321331.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65632372 + ... + 65652651.

It is an arithmetic number, because the mean of its divisors is an integer number (56058705248).

Almost surely, 2^{1331230133220} is an apocalyptic number.

1331230133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331230133220 is an abundant number, since it is smaller than the sum of its proper divisors (2704996644636).

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

1331230133220 is a wasteful number, since it uses less digits than its factorization.

1331230133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131285061 (or 131285046 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1331230133220 its reverse (223310321331), we get a palindrome (1554540454551).

The spelling of 1331230133220 in words is "one trillion, three hundred thirty-one billion, two hundred thirty million, one hundred thirty-three thousand, two hundred twenty".