1321240020234 has 64 divisors (see below), whose sum is σ = 2770027806720. Its totient is φ = 419603405760.

The previous prime is 1321240020209. The next prime is 1321240020239. The reversal of 1321240020234 is 4320200421231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1321240020239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22264887 + ... + 22324149.

It is an arithmetic number, because the mean of its divisors is an integer number (43281684480).

Almost surely, 2^{1321240020234} is an apocalyptic number.

1321240020234 is an abundant number, since it is smaller than the sum of its proper divisors (1448787786486).

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

1321240020234 is a wasteful number, since it uses less digits than its factorization.

1321240020234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61155.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1321240020234 its reverse (4320200421231), we get a palindrome (5641440441465).

The spelling of 1321240020234 in words is "one trillion, three hundred twenty-one billion, two hundred forty million, twenty thousand, two hundred thirty-four".