12402221512 has 32 divisors (see below), whose sum is σ = 23930424000. Its totient is φ = 6021445824.

The previous prime is 12402221477. The next prime is 12402221539. The reversal of 12402221512 is 21512220421.

12402221512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12402221512² (a number of 21 digits) contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 107239 + ... + 190537.

It is an arithmetic number, because the mean of its divisors is an integer number (747825750).

Almost surely, 2^12402221512 is an apocalyptic number.

It is an amenable number.

12402221512 is a deficient number, since it is larger than the sum of its proper divisors (11528202488).

12402221512 is a wasteful number, since it uses less digits than its factorization.

12402221512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83845 (or 83841 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 12402221512 its reverse (21512220421), we get a palindrome (33914441933).

The spelling of 12402221512 in words is "twelve billion, four hundred two million, two hundred twenty-one thousand, five hundred twelve".