1323221011231 has 16 divisors (see below), whose sum is σ = 1527371670528. Its totient is φ = 1122852276000.

The previous prime is 1323221011201. The next prime is 1323221011267. The reversal of 1323221011231 is 1321101223231.

It is not a de Polignac number, because 1323221011231 - 2³¹ = 1321073527583 is a prime.

It is a super-2 number, since 2×1323221011231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323221011201) 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, 7785546 + ... + 7953688.

It is an arithmetic number, because the mean of its divisors is an integer number (95460729408).

Almost surely, 2^{1323221011231} is an apocalyptic number.

1323221011231 is a deficient number, since it is larger than the sum of its proper divisors (204150659297).

1323221011231 is a wasteful number, since it uses less digits than its factorization.

1323221011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179382.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1323221011231 its reverse (1321101223231), we get a palindrome (2644322234462).

The spelling of 1323221011231 in words is "one trillion, three hundred twenty-three billion, two hundred twenty-one million, eleven thousand, two hundred thirty-one".