20013721234612 has 12 divisors (see below), whose sum is σ = 40027442469280. Its totient is φ = 8577309100536.

The previous prime is 20013721234571. The next prime is 20013721234613. The reversal of 20013721234612 is 21643212731002.

20013721234612 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013721234613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357387879162 + ... + 357387879217.

Almost surely, 2^{20013721234612} is an apocalyptic number.

It is an amenable number.

20013721234612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20013721234612 is a wasteful number, since it uses less digits than its factorization.

20013721234612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714775758390 (or 714775758388 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

Adding to 20013721234612 its reverse (21643212731002), we get a palindrome (41656933965614).

The spelling of 20013721234612 in words is "twenty trillion, thirteen billion, seven hundred twenty-one million, two hundred thirty-four thousand, six hundred twelve".