12025421244 has 48 divisors (see below), whose sum is σ = 31183236000. Its totient is φ = 4007674368.

The previous prime is 12025421231. The next prime is 12025421249. The reversal of 12025421244 is 44212452021.

It is a happy number.

It is a super-2 number, since 2×12025421244² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12025421249) 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 15 ways as a sum of consecutive naturals, for example, 818814 + ... + 833370.

It is an arithmetic number, because the mean of its divisors is an integer number (649650750).

Almost surely, 2^12025421244 is an apocalyptic number.

It is an amenable number.

12025421244 is an abundant number, since it is smaller than the sum of its proper divisors (19157814756).

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

12025421244 is a wasteful number, since it uses less digits than its factorization.

12025421244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22219 (or 22211 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 12025421244 its reverse (44212452021), we get a palindrome (56237873265).

The spelling of 12025421244 in words is "twelve billion, twenty-five million, four hundred twenty-one thousand, two hundred forty-four".