20111111202211 has 8 divisors (see below), whose sum is σ = 20602310929200. Its totient is φ = 19619944085760.

The previous prime is 20111111202209. The next prime is 20111111202251. The reversal of 20111111202211 is 11220211111102.

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

It is a cyclic number.

It is not a de Polignac number, because 20111111202211 - 2¹ = 20111111202209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111111202251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6901846 + ... + 9373243.

It is an arithmetic number, because the mean of its divisors is an integer number (2575288866150).

Almost surely, 2^{20111111202211} is an apocalyptic number.

20111111202211 is a deficient number, since it is larger than the sum of its proper divisors (491199726989).

20111111202211 is a wasteful number, since it uses less digits than its factorization.

20111111202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16305269.

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

Adding to 20111111202211 its reverse (11220211111102), we get a palindrome (31331322313313).

The spelling of 20111111202211 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, two hundred two thousand, two hundred eleven".