20001201211212 has 48 divisors (see below), whose sum is σ = 50269549300992. Its totient is φ = 6152976498240.

The previous prime is 20001201211183. The next prime is 20001201211247. The reversal of 20001201211212 is 21211210210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001201211191 and 20001201211200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12131614 + ... + 13681317.

It is an arithmetic number, because the mean of its divisors is an integer number (1047282277104).

Almost surely, 2^{20001201211212} is an apocalyptic number.

It is an amenable number.

20001201211212 is an abundant number, since it is smaller than the sum of its proper divisors (30268348089780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001201211212 is a wasteful number, since it uses less digits than its factorization.

20001201211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25817918 (or 25817916 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20001201211212 its reverse (21211210210002), we get a palindrome (41212411421214).

The spelling of 20001201211212 in words is "twenty trillion, one billion, two hundred one million, two hundred eleven thousand, two hundred twelve".