10001220201212 has 12 divisors (see below), whose sum is σ = 17505408652200. Its totient is φ = 4999674872016.

The previous prime is 10001220201211. The next prime is 10001220201223. The reversal of 10001220201212 is 21210202210001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001220201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233783087 + ... + 233825862.

It is an arithmetic number, because the mean of its divisors is an integer number (1458784054350).

Almost surely, 2^{10001220201212} is an apocalyptic number.

It is an amenable number.

10001220201212 is a deficient number, since it is larger than the sum of its proper divisors (7504188450988).

10001220201212 is a wasteful number, since it uses less digits than its factorization.

10001220201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467614300 (or 467614298 counting only the distinct ones).

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

Adding to 10001220201212 its reverse (21210202210001), we get a palindrome (31211422411213).

The spelling of 10001220201212 in words is "ten trillion, one billion, two hundred twenty million, two hundred one thousand, two hundred twelve".