1001200221212 has 12 divisors (see below), whose sum is σ = 1752232246800. Its totient is φ = 500562436416.

The previous prime is 1001200221193. The next prime is 1001200221239. The reversal of 1001200221212 is 2121220021001.

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, 9358712 + ... + 9465087.

It is an arithmetic number, because the mean of its divisors is an integer number (146019353900).

Almost surely, 2^{1001200221212} is an apocalyptic number.

It is an amenable number.

1001200221212 is a deficient number, since it is larger than the sum of its proper divisors (751032025588).

1001200221212 is a wasteful number, since it uses less digits than its factorization.

1001200221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18837100 (or 18837098 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1001200221212 its reverse (2121220021001), we get a palindrome (3122420242213).

The spelling of 1001200221212 in words is "one trillion, one billion, two hundred million, two hundred twenty-one thousand, two hundred twelve".