1200221012 has 12 divisors (see below), whose sum is σ = 2223939060. Its totient is φ = 564809856.

The previous prime is 1200220951. The next prime is 1200221023. The reversal of 1200221012 is 2101220021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 955799056 + 244421956 = 30916^2 + 15634^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200220984 and 1200221002.

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, 8825087 + ... + 8825222.

It is an arithmetic number, because the mean of its divisors is an integer number (185328255).

Almost surely, 2^1200221012 is an apocalyptic number.

It is an amenable number.

1200221012 is a deficient number, since it is larger than the sum of its proper divisors (1023718048).

1200221012 is a wasteful number, since it uses less digits than its factorization.

1200221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17650330 (or 17650328 counting only the distinct ones).

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

The square root of 1200221012 is about 34644.2060379510. The cubic root of 1200221012 is about 1062.7238041489.

Adding to 1200221012 its reverse (2101220021), we get a palindrome (3301441033).

Subtracting 1200221012 from its reverse (2101220021), we obtain a palindrome (900999009).

The spelling of 1200221012 in words is "one billion, two hundred million, two hundred twenty-one thousand, twelve".