20001101021212 has 6 divisors (see below), whose sum is σ = 35001926787128. Its totient is φ = 10000550510604.

The previous prime is 20001101021201. The next prime is 20001101021233. The reversal of 20001101021212 is 21212010110002.

It is a junction number, because it is equal to n+sod(n) for n = 20001101021192 and 20001101021201.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2500137627648 + ... + 2500137627655.

Almost surely, 2^{20001101021212} is an apocalyptic number.

It is an amenable number.

20001101021212 is a deficient number, since it is larger than the sum of its proper divisors (15000825765916).

20001101021212 is a wasteful number, since it uses less digits than its factorization.

20001101021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000275255307 (or 5000275255305 counting only the distinct ones).

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

Adding to 20001101021212 its reverse (21212010110002), we get a palindrome (41213111131214).

The spelling of 20001101021212 in words is "twenty trillion, one billion, one hundred one million, twenty-one thousand, two hundred twelve".