1212200012 has 12 divisors (see below), whose sum is σ = 2121594720. Its totient is φ = 606030096.

The previous prime is 1212199951. The next prime is 1212200021. The reversal of 1212200012 is 2100022121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212199966 and 1212200002.

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, 54158 + ... + 73194.

It is an arithmetic number, because the mean of its divisors is an integer number (176799560).

Almost surely, 2^1212200012 is an apocalyptic number.

It is an amenable number.

1212200012 is a deficient number, since it is larger than the sum of its proper divisors (909394708).

1212200012 is a wasteful number, since it uses less digits than its factorization.

1212200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34960 (or 34958 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1212200012 is about 34816.6628498482. The cubic root of 1212200012 is about 1066.2476688115.

Adding to 1212200012 its reverse (2100022121), we get a palindrome (3312222133).

The spelling of 1212200012 in words is "one billion, two hundred twelve million, two hundred thousand, twelve".