20020131212012 has 12 divisors (see below), whose sum is σ = 35036096619216. Its totient is φ = 10009817892240.

The previous prime is 20020131211939. The next prime is 20020131212021. The reversal of 20020131212012 is 21021213102002.

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 3 ways as a sum of consecutive naturals, for example, 61746539 + ... + 62069922.

It is an arithmetic number, because the mean of its divisors is an integer number (2919674718268).

Almost surely, 2^{20020131212012} is an apocalyptic number.

It is an amenable number.

20020131212012 is a deficient number, since it is larger than the sum of its proper divisors (15015965407204).

20020131212012 is a wasteful number, since it uses less digits than its factorization.

20020131212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123856888 (or 123856886 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20020131212012 its reverse (21021213102002), we get a palindrome (41041344314014).

The spelling of 20020131212012 in words is "twenty trillion, twenty billion, one hundred thirty-one million, two hundred twelve thousand, twelve".