1323303622121 has 32 divisors (see below), whose sum is σ = 1507829568000. Its totient is φ = 1151268588288.

The previous prime is 1323303622031. The next prime is 1323303622169. The reversal of 1323303622121 is 1212263033231.

It is a happy number.

It is not a de Polignac number, because 1323303622121 - 2¹⁰ = 1323303621097 is a prime.

It is a super-2 number, since 2×1323303622121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323303622171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64512815 + ... + 64533323.

It is an arithmetic number, because the mean of its divisors is an integer number (47119674000).

Almost surely, 2^{1323303622121} is an apocalyptic number.

It is an amenable number.

1323303622121 is a deficient number, since it is larger than the sum of its proper divisors (184525945879).

1323303622121 is a wasteful number, since it uses less digits than its factorization.

1323303622121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21873.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 1323303622121 its reverse (1212263033231), we get a palindrome (2535566655352).

The spelling of 1323303622121 in words is "one trillion, three hundred twenty-three billion, three hundred three million, six hundred twenty-two thousand, one hundred twenty-one".