1321230240013 has 8 divisors (see below), whose sum is σ = 1374261647616. Its totient is φ = 1268849524800.

The previous prime is 1321230240007. The next prime is 1321230240019. The reversal of 1321230240013 is 3100420321231.

It is an interprime number because it is at equal distance from previous prime (1321230240007) and next prime (1321230240019).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321230240013 - 2¹³ = 1321230231821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321230240019) 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, 162668956 + ... + 162677077.

It is an arithmetic number, because the mean of its divisors is an integer number (171782705952).

Almost surely, 2^{1321230240013} is an apocalyptic number.

It is an amenable number.

1321230240013 is a deficient number, since it is larger than the sum of its proper divisors (53031407603).

1321230240013 is a wasteful number, since it uses less digits than its factorization.

1321230240013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325346195.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1321230240013 its reverse (3100420321231), we get a palindrome (4421650561244).

The spelling of 1321230240013 in words is "one trillion, three hundred twenty-one billion, two hundred thirty million, two hundred forty thousand, thirteen".