20021201210012 has 48 divisors (see below), whose sum is σ = 38112460430688. Its totient is φ = 9165452974080.

The previous prime is 20021201209991. The next prime is 20021201210039. The reversal of 20021201210012 is 21001210212002.

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 15 ways as a sum of consecutive naturals, for example, 9380123 + ... + 11314994.

It is an arithmetic number, because the mean of its divisors is an integer number (794009592306).

Almost surely, 2^{20021201210012} is an apocalyptic number.

It is an amenable number.

20021201210012 is a deficient number, since it is larger than the sum of its proper divisors (18091259220676).

20021201210012 is a wasteful number, since it uses less digits than its factorization.

20021201210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20695526 (or 20695524 counting only the distinct ones).

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

Adding to 20021201210012 its reverse (21001210212002), we get a palindrome (41022411422014).

It can be divided in two parts, 200 and 21201210012, that added together give a palindrome (21201210212).

The spelling of 20021201210012 in words is "twenty trillion, twenty-one billion, two hundred one million, two hundred ten thousand, twelve".