20001103212 has 12 divisors (see below), whose sum is σ = 46669240856. Its totient is φ = 6667034400.

The previous prime is 20001103193. The next prime is 20001103247. The reversal of 20001103212 is 21230110002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1666758601 = 20001103212 / (2 + 0 + 0 + 0 + 1 + 1 + 0 + 3 + 2 + 1 + 2).

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, 833379289 + ... + 833379312.

Almost surely, 2^20001103212 is an apocalyptic number.

It is an amenable number.

20001103212 is an abundant number, since it is smaller than the sum of its proper divisors (26668137644).

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

20001103212 is a wasteful number, since it uses less digits than its factorization.

20001103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666758608 (or 1666758606 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20001103212 its reverse (21230110002), we get a palindrome (41231213214).

The spelling of 20001103212 in words is "twenty billion, one million, one hundred three thousand, two hundred twelve".