1321340253122 has 16 divisors (see below), whose sum is σ = 2008666016280. Its totient is φ = 651817402368.

The previous prime is 1321340253113. The next prime is 1321340253127. The reversal of 1321340253122 is 2213520431231.

It can be written as a sum of positive squares in 4 ways, for example, as 1191719372281 + 129620880841 = 1091659^2 + 360029^2 .

It is a super-2 number, since 2×1321340253122² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321340253127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8040383 + ... + 8203074.

Almost surely, 2^{1321340253122} is an apocalyptic number.

1321340253122 is a deficient number, since it is larger than the sum of its proper divisors (687325763158).

1321340253122 is a wasteful number, since it uses less digits than its factorization.

1321340253122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16244005.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1321340253122 its reverse (2213520431231), we get a palindrome (3534860684353).

The spelling of 1321340253122 in words is "one trillion, three hundred twenty-one billion, three hundred forty million, two hundred fifty-three thousand, one hundred twenty-two".