1330420005521 has 8 divisors (see below), whose sum is σ = 1356377504640. Its totient is φ = 1304576106768.

The previous prime is 1330420005517. The next prime is 1330420005533. The reversal of 1330420005521 is 1255000240331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1330420005521 - 2² = 1330420005517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1330420005221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28376441 + ... + 28423286.

It is an arithmetic number, because the mean of its divisors is an integer number (169547188080).

Almost surely, 2^{1330420005521} is an apocalyptic number.

It is an amenable number.

1330420005521 is a deficient number, since it is larger than the sum of its proper divisors (25957499119).

1330420005521 is an equidigital number, since it uses as much as digits as its factorization.

1330420005521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56800183.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 1330420005521 its reverse (1255000240331), we get a palindrome (2585420245852).

The spelling of 1330420005521 in words is "one trillion, three hundred thirty billion, four hundred twenty million, five thousand, five hundred twenty-one".