20001012212212 has 24 divisors (see below), whose sum is σ = 35011866708000. Its totient is φ = 9997622043936.

The previous prime is 20001012212197. The next prime is 20001012212213. The reversal of 20001012212212 is 21221221010002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001012212213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359579739 + ... + 359635357.

It is an arithmetic number, because the mean of its divisors is an integer number (1458827779500).

Almost surely, 2^{20001012212212} is an apocalyptic number.

It is an amenable number.

20001012212212 is a deficient number, since it is larger than the sum of its proper divisors (15010854495788).

20001012212212 is a wasteful number, since it uses less digits than its factorization.

20001012212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79935 (or 79933 counting only the distinct ones).

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

Adding to 20001012212212 its reverse (21221221010002), we get a palindrome (41222233222214).

The spelling of 20001012212212 in words is "twenty trillion, one billion, twelve million, two hundred twelve thousand, two hundred twelve".