20011839121212 has 24 divisors (see below), whose sum is σ = 46783915656912. Its totient is φ = 6657809558400.

The previous prime is 20011839121171. The next prime is 20011839121213. The reversal of 20011839121212 is 21212193811002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011839121213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1600428739 + ... + 1600441242.

It is an arithmetic number, because the mean of its divisors is an integer number (1949329819038).

Almost surely, 2^{20011839121212} is an apocalyptic number.

It is an amenable number.

20011839121212 is an abundant number, since it is smaller than the sum of its proper divisors (26772076535700).

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

20011839121212 is a wasteful number, since it uses less digits than its factorization.

20011839121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200870509 (or 3200870507 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The spelling of 20011839121212 in words is "twenty trillion, eleven billion, eight hundred thirty-nine million, one hundred twenty-one thousand, two hundred twelve".