20001112211 has 4 divisors (see below), whose sum is σ = 20095904424. Its totient is φ = 19906320000.

The previous prime is 20001112189. The next prime is 20001112217. The reversal of 20001112211 is 11221110002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20001112211 - 2¹⁴ = 20001095827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001112192 and 20001112201.

It is not an unprimeable number, because it can be changed into a prime (20001112217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47395790 + ... + 47396211.

It is an arithmetic number, because the mean of its divisors is an integer number (5023976106).

Almost surely, 2^20001112211 is an apocalyptic number.

20001112211 is a deficient number, since it is larger than the sum of its proper divisors (94792213).

20001112211 is an equidigital number, since it uses as much as digits as its factorization.

20001112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94792212.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001112211 its reverse (11221110002), we get a palindrome (31222222213).

The spelling of 20001112211 in words is "twenty billion, one million, one hundred twelve thousand, two hundred eleven".