20112021102211 has 4 divisors (see below), whose sum is σ = 20112042475312. Its totient is φ = 20111999729112.

The previous prime is 20112021102197. The next prime is 20112021102221. The reversal of 20112021102211 is 11220112021102.

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 20112021102211 - 2⁵ = 20112021102179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112021102221) 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, 9206751 + ... + 11179816.

It is an arithmetic number, because the mean of its divisors is an integer number (5028010618828).

Almost surely, 2^{20112021102211} is an apocalyptic number.

20112021102211 is a deficient number, since it is larger than the sum of its proper divisors (21373101).

20112021102211 is an equidigital number, since it uses as much as digits as its factorization.

20112021102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21373100.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20112021102211 its reverse (11220112021102), we get a palindrome (31332133123313).

The spelling of 20112021102211 in words is "twenty trillion, one hundred twelve billion, twenty-one million, one hundred two thousand, two hundred eleven".