12400220212 has 12 divisors (see below), whose sum is σ = 21702931936. Its totient is φ = 6199382520.

The previous prime is 12400220201. The next prime is 12400220243. The reversal of 12400220212 is 21202200421.

It is a super-2 number, since 2×12400220212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142608 + ... + 212455.

Almost surely, 2^12400220212 is an apocalyptic number.

It is an amenable number.

12400220212 is a deficient number, since it is larger than the sum of its proper divisors (9302711724).

12400220212 is a wasteful number, since it uses less digits than its factorization.

12400220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363798 (or 363796 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12400220212 its reverse (21202200421), we get a palindrome (33602420633).

The spelling of 12400220212 in words is "twelve billion, four hundred million, two hundred twenty thousand, two hundred twelve".