1211332321323 has 16 divisors (see below), whose sum is σ = 1795008902560. Its totient is φ = 807355755648.

The previous prime is 1211332321291. The next prime is 1211332321333. The reversal of 1211332321323 is 3231232331121.

1211332321323 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 332 + 3 + 2 + 1 + 323 = 666.

It is not a de Polignac number, because 1211332321323 - 2⁵ = 1211332321291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211332321333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5419690 + ... + 5638767.

It is an arithmetic number, because the mean of its divisors is an integer number (112188056410).

Almost surely, 2^{1211332321323} is an apocalyptic number.

1211332321323 is a deficient number, since it is larger than the sum of its proper divisors (583676581237).

1211332321323 is a wasteful number, since it uses less digits than its factorization.

1211332321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11062523 (or 11062517 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1211332321323 its reverse (3231232331121), we get a palindrome (4442564652444).

The spelling of 1211332321323 in words is "one trillion, two hundred eleven billion, three hundred thirty-two million, three hundred twenty-one thousand, three hundred twenty-three".