20112202012211 has 4 divisors (see below), whose sum is σ = 20188674263472. Its totient is φ = 20035729760952.

The previous prime is 20112202012151. The next prime is 20112202012223. The reversal of 20112202012211 is 11221020221102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112202012211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112202012211.

It is not an unprimeable number, because it can be changed into a prime (20112202012241) 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, 38236125236 + ... + 38236125761.

It is an arithmetic number, because the mean of its divisors is an integer number (5047168565868).

Almost surely, 2^{20112202012211} is an apocalyptic number.

20112202012211 is a deficient number, since it is larger than the sum of its proper divisors (76472251261).

20112202012211 is an equidigital number, since it uses as much as digits as its factorization.

20112202012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76472251260.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20112202012211 its reverse (11221020221102), we get a palindrome (31333222233313).

The spelling of 20112202012211 in words is "twenty trillion, one hundred twelve billion, two hundred two million, twelve thousand, two hundred eleven".