1321539261119 has 16 divisors (see below), whose sum is σ = 1652522516736. Its totient is φ = 1026715132800.

The previous prime is 1321539261109. The next prime is 1321539261131. The reversal of 1321539261119 is 9111629351231.

It is not a de Polignac number, because 1321539261119 - 2⁴ = 1321539261103 is a prime.

It is a super-2 number, since 2×1321539261119² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321539261119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321539261109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25438217 + ... + 25490114.

It is an arithmetic number, because the mean of its divisors is an integer number (103282657296).

Almost surely, 2^{1321539261119} is an apocalyptic number.

1321539261119 is a deficient number, since it is larger than the sum of its proper divisors (330983255617).

1321539261119 is a wasteful number, since it uses less digits than its factorization.

1321539261119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50928686.

The product of its digits is 87480, while the sum is 44.

The spelling of 1321539261119 in words is "one trillion, three hundred twenty-one billion, five hundred thirty-nine million, two hundred sixty-one thousand, one hundred nineteen".