1321405461113 has 4 divisors (see below), whose sum is σ = 1321478497140. Its totient is φ = 1321332425088.

The previous prime is 1321405461067. The next prime is 1321405461137. The reversal of 1321405461113 is 3111645041231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235314248464 + 1086091212649 = 485092^2 + 1042157^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321405461113 - 2⁸ = 1321405460857 is a prime.

It is a super-2 number, since 2×1321405461113² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321405461113.

It is not an unprimeable number, because it can be changed into a prime (1321405461163) 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 3 ways as a sum of consecutive naturals, for example, 36490868 + ... + 36527061.

It is an arithmetic number, because the mean of its divisors is an integer number (330369624285).

Almost surely, 2^{1321405461113} is an apocalyptic number.

It is an amenable number.

1321405461113 is a deficient number, since it is larger than the sum of its proper divisors (73036027).

1321405461113 is an equidigital number, since it uses as much as digits as its factorization.

1321405461113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73036026.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 1321405461113 in words is "one trillion, three hundred twenty-one billion, four hundred five million, four hundred sixty-one thousand, one hundred thirteen".