20001103211 has 8 divisors (see below), whose sum is σ = 21179180160. Its totient is φ = 18823197568.

The previous prime is 20001103193. The next prime is 20001103247. The reversal of 20001103211 is 11230110002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001103211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001103192 and 20001103201.

It is not an unprimeable number, because it can be changed into a prime (20001103261) 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, 257990 + ... + 326436.

It is an arithmetic number, because the mean of its divisors is an integer number (2647397520).

Almost surely, 2^20001103211 is an apocalyptic number.

20001103211 is a deficient number, since it is larger than the sum of its proper divisors (1178076949).

20001103211 is a wasteful number, since it uses less digits than its factorization.

20001103211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85653.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20001103211 its reverse (11230110002), we get a palindrome (31231213213).

The spelling of 20001103211 in words is "twenty billion, one million, one hundred three thousand, two hundred eleven".