1200221212 has 18 divisors (see below), whose sum is σ = 2109822008. Its totient is φ = 597426912.

The previous prime is 1200221147. The next prime is 1200221287. The reversal of 1200221212 is 2121220021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200221192 and 1200221201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214393 + ... + 219919.

Almost surely, 2^1200221212 is an apocalyptic number.

It is an amenable number.

1200221212 is a deficient number, since it is larger than the sum of its proper divisors (909600796).

1200221212 is an equidigital number, since it uses as much as digits as its factorization.

1200221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5997 (or 5762 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1200221212 is about 34644.2089244364. The cubic root of 1200221212 is about 1062.7238631782.

Adding to 1200221212 its reverse (2121220021), we get a palindrome (3321441233).

The spelling of 1200221212 in words is "one billion, two hundred million, two hundred twenty-one thousand, two hundred twelve".