12421211024 has 40 divisors (see below), whose sum is σ = 25491915288. Its totient is φ = 5842944000.

The previous prime is 12421211021. The next prime is 12421211029. The reversal of 12421211024 is 42011212421.

It can be written as a sum of positive squares in 4 ways, for example, as 5849190400 + 6572020624 = 76480^2 + 81068^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12421210987 and 12421211005.

It is not an unprimeable number, because it can be changed into a prime (12421211021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808664 + ... + 823880.

Almost surely, 2^12421211024 is an apocalyptic number.

It is an amenable number.

12421211024 is an abundant number, since it is smaller than the sum of its proper divisors (13070704264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12421211024 is a wasteful number, since it uses less digits than its factorization.

12421211024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18243 (or 18237 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12421211024 its reverse (42011212421), we get a palindrome (54432423445).

The spelling of 12421211024 in words is "twelve billion, four hundred twenty-one million, two hundred eleven thousand, twenty-four".