1000201221212 has 24 divisors (see below), whose sum is σ = 1794791036304. Its totient is φ = 487557683712.

The previous prime is 1000201221179. The next prime is 1000201221223. The reversal of 1000201221212 is 2121221020001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19211603 + ... + 19263594.

It is an arithmetic number, because the mean of its divisors is an integer number (74782959846).

Almost surely, 2^{1000201221212} is an apocalyptic number.

It is an amenable number.

1000201221212 is a deficient number, since it is larger than the sum of its proper divisors (794589815092).

1000201221212 is a wasteful number, since it uses less digits than its factorization.

1000201221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38475365 (or 38475363 counting only the distinct ones).

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

Adding to 1000201221212 its reverse (2121221020001), we get a palindrome (3121422241213).

The spelling of 1000201221212 in words is "one trillion, two hundred one million, two hundred twenty-one thousand, two hundred twelve".