12321121010 has 16 divisors (see below), whose sum is σ = 24194201472. Its totient is φ = 4480407600.

The previous prime is 12321121009. The next prime is 12321121013. The reversal of 12321121010 is 1012112321.

It is not an unprimeable number, because it can be changed into a prime (12321121013) 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 7 ways as a sum of consecutive naturals, for example, 56004986 + ... + 56005205.

It is an arithmetic number, because the mean of its divisors is an integer number (1512137592).

Almost surely, 2^12321121010 is an apocalyptic number.

12321121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12321121010 is a deficient number, since it is larger than the sum of its proper divisors (11873080462).

12321121010 is a wasteful number, since it uses less digits than its factorization.

12321121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112010209.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12321121010 its reverse (1012112321), we get a palindrome (13333233331).

It can be divided in two parts, 12321 and 121010, that added together give a palindrome (133331).

The spelling of 12321121010 in words is "twelve billion, three hundred twenty-one million, one hundred twenty-one thousand, ten".