1321505216330 has 32 divisors (see below), whose sum is σ = 2565963792000. Its totient is φ = 487125767232.

The previous prime is 1321505216327. The next prime is 1321505216419. The reversal of 1321505216330 is 336125051231.

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, 8407460 + ... + 8563199.

It is an arithmetic number, because the mean of its divisors is an integer number (80186368500).

Almost surely, 2^{1321505216330} is an apocalyptic number.

1321505216330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321505216330 is a deficient number, since it is larger than the sum of its proper divisors (1244458575670).

1321505216330 is a wasteful number, since it uses less digits than its factorization.

1321505216330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16971278.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 1321505216330 in words is "one trillion, three hundred twenty-one billion, five hundred five million, two hundred sixteen thousand, three hundred thirty".