12011452321 has 12 divisors (see below), whose sum is σ = 13215589156. Its totient is φ = 10908817920.

The previous prime is 12011452303. The next prime is 12011452333. The reversal of 12011452321 is 12325411021.

It can be written as a sum of positive squares in 2 ways, for example, as 5842920721 + 6168531600 = 76439^2 + 78540^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12011452321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011452292 and 12011452301.

It is not an unprimeable number, because it can be changed into a prime (12011452301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76945 + ... + 173041.

Almost surely, 2^12011452321 is an apocalyptic number.

12011452321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12011452321 is a deficient number, since it is larger than the sum of its proper divisors (1204136835).

12011452321 is a wasteful number, since it uses less digits than its factorization.

12011452321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97152 (or 97141 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 12011452321 its reverse (12325411021), we get a palindrome (24336863342).

The spelling of 12011452321 in words is "twelve billion, eleven million, four hundred fifty-two thousand, three hundred twenty-one".