12402232243 has 4 divisors (see below), whose sum is σ = 12417302608. Its totient is φ = 12387161880.

The previous prime is 12402232211. The next prime is 12402232261. The reversal of 12402232243 is 34223220421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12402232243 - 2⁵ = 12402232211 is a prime.

It is a super-2 number, since 2×12402232243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12402232543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7533948 + ... + 7535593.

It is an arithmetic number, because the mean of its divisors is an integer number (3104325652).

Almost surely, 2^12402232243 is an apocalyptic number.

12402232243 is a deficient number, since it is larger than the sum of its proper divisors (15070365).

12402232243 is an equidigital number, since it uses as much as digits as its factorization.

12402232243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15070364.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 12402232243 its reverse (34223220421), we get a palindrome (46625452664).

The spelling of 12402232243 in words is "twelve billion, four hundred two million, two hundred thirty-two thousand, two hundred forty-three".