20001212012104 has 16 divisors (see below), whose sum is σ = 37593965126700. Its totient is φ = 9976154644992.

The previous prime is 20001212012099. The next prime is 20001212012113. The reversal of 20001212012104 is 40121021210002.

It can be written as a sum of positive squares in 2 ways, for example, as 15538969802500 + 4462242209604 = 3941950^2 + 2112402^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056416657 + ... + 3056423200.

Almost surely, 2^{20001212012104} is an apocalyptic number.

It is an amenable number.

20001212012104 is a deficient number, since it is larger than the sum of its proper divisors (17592753114596).

20001212012104 is a wasteful number, since it uses less digits than its factorization.

20001212012104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112840272 (or 6112840268 counting only the distinct ones).

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

Adding to 20001212012104 its reverse (40121021210002), we get a palindrome (60122233222106).

The spelling of 20001212012104 in words is "twenty trillion, one billion, two hundred twelve million, twelve thousand, one hundred four".