20001201121012 has 12 divisors (see below), whose sum is σ = 36523932482016. Its totient is φ = 9565791840440.

The previous prime is 20001201121007. The next prime is 20001201121063. The reversal of 20001201121012 is 21012110210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001201120983 and 20001201121001.

It is a congruent number.

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, 108702179914 + ... + 108702180097.

It is an arithmetic number, because the mean of its divisors is an integer number (3043661040168).

Almost surely, 2^{20001201121012} is an apocalyptic number.

It is an amenable number.

20001201121012 is a deficient number, since it is larger than the sum of its proper divisors (16522731361004).

20001201121012 is a wasteful number, since it uses less digits than its factorization.

20001201121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217404360038 (or 217404360036 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20001201121012 its reverse (21012110210002), we get a palindrome (41013311331014).

The spelling of 20001201121012 in words is "twenty trillion, one billion, two hundred one million, one hundred twenty-one thousand, twelve".