20001101212012 has 6 divisors (see below), whose sum is σ = 35001927121028. Its totient is φ = 10000550606004.

The previous prime is 20001101212009. The next prime is 20001101212013. The reversal of 20001101212012 is 21021210110002.

It is a junction number, because it is equal to n+sod(n) for n = 20001101211983 and 20001101212001.

It is not an unprimeable number, because it can be changed into a prime (20001101212013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500137651498 + ... + 2500137651505.

Almost surely, 2^{20001101212012} is an apocalyptic number.

It is an amenable number.

20001101212012 is a deficient number, since it is larger than the sum of its proper divisors (15000825909016).

20001101212012 is a wasteful number, since it uses less digits than its factorization.

20001101212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000275303007 (or 5000275303005 counting only the distinct ones).

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

Adding to 20001101212012 its reverse (21021210110002), we get a palindrome (41022311322014).

The spelling of 20001101212012 in words is "twenty trillion, one billion, one hundred one million, two hundred twelve thousand, twelve".