12320123011 has 16 divisors (see below), whose sum is σ = 14462509824. Its totient is φ = 10277128224.

The previous prime is 12320122993. The next prime is 12320123017. The reversal of 12320123011 is 11032102321.

It is a cyclic number.

It is not a de Polignac number, because 12320123011 - 2⁵ = 12320122979 is a prime.

It is a super-2 number, since 2×12320123011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12320123017) 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, 119320 + ... + 197173.

It is an arithmetic number, because the mean of its divisors is an integer number (903906864).

Almost surely, 2^12320123011 is an apocalyptic number.

12320123011 is a deficient number, since it is larger than the sum of its proper divisors (2142386813).

12320123011 is an equidigital number, since it uses as much as digits as its factorization.

12320123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316650.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12320123011 its reverse (11032102321), we get a palindrome (23352225332).

The spelling of 12320123011 in words is "twelve billion, three hundred twenty million, one hundred twenty-three thousand, eleven".