1320021333040 has 40 divisors (see below), whose sum is σ = 3074559666480. Its totient is φ = 527060564736.

The previous prime is 1320021333017. The next prime is 1320021333041. The reversal of 1320021333040 is 403331200231.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1320021333041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14767170 + ... + 14856289.

It is an arithmetic number, because the mean of its divisors is an integer number (76863991662).

Almost surely, 2^{1320021333040} is an apocalyptic number.

1320021333040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320021333040 is an abundant number, since it is smaller than the sum of its proper divisors (1754538333440).

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

1320021333040 is a wasteful number, since it uses less digits than its factorization.

1320021333040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29624029 (or 29624023 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 1320021333040 its reverse (403331200231), we get a palindrome (1723352533271).

The spelling of 1320021333040 in words is "one trillion, three hundred twenty billion, twenty-one million, three hundred thirty-three thousand, forty".