20120102201212 has 48 divisors (see below), whose sum is σ = 39261127076640. Its totient is φ = 8958002473728.

The previous prime is 20120102201209. The next prime is 20120102201261. The reversal of 20120102201212 is 21210220102102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4246963 + ... + 7633930.

It is an arithmetic number, because the mean of its divisors is an integer number (817940147430).

Almost surely, 2^{20120102201212} is an apocalyptic number.

It is an amenable number.

20120102201212 is a deficient number, since it is larger than the sum of its proper divisors (19141024875428).

20120102201212 is a wasteful number, since it uses less digits than its factorization.

20120102201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11882062 (or 11882060 counting only the distinct ones).

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

Adding to 20120102201212 its reverse (21210220102102), we get a palindrome (41330322303314).

The spelling of 20120102201212 in words is "twenty trillion, one hundred twenty billion, one hundred two million, two hundred one thousand, two hundred twelve".