1321000322340 has 48 divisors (see below), whose sum is σ = 3698865656640. Its totient is φ = 352260585600.

The previous prime is 1321000322309. The next prime is 1321000322359. The reversal of 1321000322340 is 432230001231.

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, 4026490 + ... + 4342190.

It is an arithmetic number, because the mean of its divisors is an integer number (77059701180).

Almost surely, 2^{1321000322340} is an apocalyptic number.

1321000322340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321000322340 is an abundant number, since it is smaller than the sum of its proper divisors (2377865334300).

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

1321000322340 is a wasteful number, since it uses less digits than its factorization.

1321000322340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385452 (or 385450 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1321000322340 its reverse (432230001231), we get a palindrome (1753230323571).

The spelling of 1321000322340 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-two thousand, three hundred forty".