1200021212212 has 12 divisors (see below), whose sum is σ = 2119663637280. Its totient is φ = 594403030136.

The previous prime is 1200021212147. The next prime is 1200021212219. The reversal of 1200021212212 is 2122121200021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200021212219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401893512 + ... + 1401894367.

It is an arithmetic number, because the mean of its divisors is an integer number (176638636440).

Almost surely, 2^{1200021212212} is an apocalyptic number.

It is an amenable number.

1200021212212 is a deficient number, since it is larger than the sum of its proper divisors (919642425068).

1200021212212 is a wasteful number, since it uses less digits than its factorization.

1200021212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803787990 (or 2803787988 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1200021212212 its reverse (2122121200021), we get a palindrome (3322142412233).

It can be divided in two parts, 1200021 and 212212, that multiplied together give a palindrome (254658856452).

The spelling of 1200021212212 in words is "one trillion, two hundred billion, twenty-one million, two hundred twelve thousand, two hundred twelve".