1321011032704 has 64 divisors (see below), whose sum is σ = 2969945546400. Its totient is φ = 579754040320.

The previous prime is 1321011032681. The next prime is 1321011032707. The reversal of 1321011032704 is 4072301101231.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (1321011032707) 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, 16135342 + ... + 16217005.

Almost surely, 2^{1321011032704} is an apocalyptic number.

It is an amenable number.

1321011032704 is an abundant number, since it is smaller than the sum of its proper divisors (1648934513696).

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

1321011032704 is a wasteful number, since it uses less digits than its factorization.

1321011032704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32352401 (or 32352389 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 1321011032704 its reverse (4072301101231), we get a palindrome (5393312133935).

The spelling of 1321011032704 in words is "one trillion, three hundred twenty-one billion, eleven million, thirty-two thousand, seven hundred four".