20001000201212 has 12 divisors (see below), whose sum is σ = 35001816703896. Its totient is φ = 10000481142960.

The previous prime is 20001000201199. The next prime is 20001000201293. The reversal of 20001000201212 is 21210200010002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20001000201193 and 20001000201202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216339 + ... + 6701802.

It is an arithmetic number, because the mean of its divisors is an integer number (2916818058658).

Almost surely, 2^{20001000201212} is an apocalyptic number.

It is an amenable number.

20001000201212 is a deficient number, since it is larger than the sum of its proper divisors (15000816502684).

20001000201212 is a wasteful number, since it uses less digits than its factorization.

20001000201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9478828 (or 9478826 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001000201212 its reverse (21210200010002), we get a palindrome (41211200211214).

The spelling of 20001000201212 in words is "twenty trillion, one billion, two hundred one thousand, two hundred twelve".