12230021123 has 4 divisors (see below), whose sum is σ = 12230310888. Its totient is φ = 12229731360.

The previous prime is 12230021093. The next prime is 12230021129. The reversal of 12230021123 is 32112003221.

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 12230021123 - 2¹² = 12230017027 is a prime.

It is a super-2 number, since 2×12230021123² (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 (12230021129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67958 + ... + 170523.

It is an arithmetic number, because the mean of its divisors is an integer number (3057577722).

Almost surely, 2^12230021123 is an apocalyptic number.

12230021123 is a deficient number, since it is larger than the sum of its proper divisors (289765).

12230021123 is an equidigital number, since it uses as much as digits as its factorization.

12230021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289764.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12230021123 its reverse (32112003221), we get a palindrome (44342024344).

The spelling of 12230021123 in words is "twelve billion, two hundred thirty million, twenty-one thousand, one hundred twenty-three".