1320421015332 has 144 divisors (see below), whose sum is σ = 3425056637184. Its totient is φ = 428718528000.

The previous prime is 1320421015261. The next prime is 1320421015367. The reversal of 1320421015332 is 2335101240231.

1320421015332 is a `hidden beast` number, since 1 + 3 + 20 + 4 + 2 + 101 + 533 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1320421015296 and 1320421015305.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 656598207 + ... + 656600217.

It is an arithmetic number, because the mean of its divisors is an integer number (23785115536).

Almost surely, 2^{1320421015332} is an apocalyptic number.

1320421015332 is a gapful number since it is divisible by the number (12) 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 1320421015332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712528318592).

1320421015332 is an abundant number, since it is smaller than the sum of its proper divisors (2104635621852).

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

1320421015332 is a wasteful number, since it uses less digits than its factorization.

1320421015332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730 (or 3725 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 1320421015332 its reverse (2335101240231), we get a palindrome (3655522255563).

The spelling of 1320421015332 in words is "one trillion, three hundred twenty billion, four hundred twenty-one million, fifteen thousand, three hundred thirty-two".