1323121020113 has 16 divisors (see below), whose sum is σ = 1446272990400. Its totient is φ = 1206158065920.

The previous prime is 1323121020061. The next prime is 1323121020121. The reversal of 1323121020113 is 3110201213231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1323121020113 - 2¹⁰ = 1323121019089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323121020163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11576603 + ... + 11690336.

It is an arithmetic number, because the mean of its divisors is an integer number (90392061900).

Almost surely, 2^{1323121020113} is an apocalyptic number.

It is an amenable number.

1323121020113 is a deficient number, since it is larger than the sum of its proper divisors (123151970287).

1323121020113 is a wasteful number, since it uses less digits than its factorization.

1323121020113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23267072.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1323121020113 its reverse (3110201213231), we get a palindrome (4433322233344).

The spelling of 1323121020113 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-one million, twenty thousand, one hundred thirteen".