1321240034444 has 24 divisors (see below), whose sum is σ = 2524687915008. Its totient is φ = 600011133840.

The previous prime is 1321240034441. The next prime is 1321240034461. The reversal of 1321240034444 is 4444300421231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321240034444.

It is not an unprimeable number, because it can be changed into a prime (1321240034441) 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, 13764584 + ... + 13860239.

It is an arithmetic number, because the mean of its divisors is an integer number (105195329792).

Almost surely, 2^{1321240034444} is an apocalyptic number.

It is an amenable number.

1321240034444 is a deficient number, since it is larger than the sum of its proper divisors (1203447880564).

1321240034444 is a wasteful number, since it uses less digits than its factorization.

1321240034444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27625925 (or 27625923 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1321240034444 its reverse (4444300421231), we get a palindrome (5765540455675).

The spelling of 1321240034444 in words is "one trillion, three hundred twenty-one billion, two hundred forty million, thirty-four thousand, four hundred forty-four".