1323121332133 has 4 divisors (see below), whose sum is σ = 1323198828940. Its totient is φ = 1323043835328.

The previous prime is 1323121332079. The next prime is 1323121332139. The reversal of 1323121332133 is 3312331213231.

It is a happy number.

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 763793846209 + 559327485924 = 873953^2 + 747882^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323121332133 - 2¹³ = 1323121323941 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 (1323121332139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38722788 + ... + 38756941.

It is an arithmetic number, because the mean of its divisors is an integer number (330799707235).

Almost surely, 2^{1323121332133} is an apocalyptic number.

It is an amenable number.

1323121332133 is a deficient number, since it is larger than the sum of its proper divisors (77496807).

1323121332133 is an equidigital number, since it uses as much as digits as its factorization.

1323121332133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77496806.

The product of its digits is 5832, while the sum is 28.

Adding to 1323121332133 its reverse (3312331213231), we get a palindrome (4635452545364).

The spelling of 1323121332133 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred thirty-three".