1321320111234 has 16 divisors (see below), whose sum is σ = 2646410045760. Its totient is φ = 439811733200.

The previous prime is 1321320111211. The next prime is 1321320111299. The reversal of 1321320111234 is 4321110231231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157071414 + ... + 157079825.

It is an arithmetic number, because the mean of its divisors is an integer number (165400627860).

Almost surely, 2^{1321320111234} is an apocalyptic number.

1321320111234 is an abundant number, since it is smaller than the sum of its proper divisors (1325089934526).

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

1321320111234 is a wasteful number, since it uses less digits than its factorization.

1321320111234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314151945.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1321320111234 its reverse (4321110231231), we get a palindrome (5642430342465).

The spelling of 1321320111234 in words is "one trillion, three hundred twenty-one billion, three hundred twenty million, one hundred eleven thousand, two hundred thirty-four".