12402221452 has 6 divisors (see below), whose sum is σ = 21703887548. Its totient is φ = 6201110724.

The previous prime is 12402221417. The next prime is 12402221471. The reversal of 12402221452 is 25412220421.

It is a happy number.

12402221452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550277678 + ... + 1550277685.

Almost surely, 2^12402221452 is an apocalyptic number.

It is an amenable number.

12402221452 is a deficient number, since it is larger than the sum of its proper divisors (9301666096).

12402221452 is a wasteful number, since it uses less digits than its factorization.

12402221452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100555367 (or 3100555365 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 12402221452 its reverse (25412220421), we get a palindrome (37814441873).

The spelling of 12402221452 in words is "twelve billion, four hundred two million, two hundred twenty-one thousand, four hundred fifty-two".