20112222221211 has 8 divisors (see below), whose sum is σ = 26820096280144. Its totient is φ = 13406248154880.

The previous prime is 20112222221209. The next prime is 20112222221233. The reversal of 20112222221211 is 11212222221102.

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

It is not a de Polignac number, because 20112222221211 - 2¹ = 20112222221209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112222221011) 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, 474973450 + ... + 475015791.

It is an arithmetic number, because the mean of its divisors is an integer number (3352512035018).

Almost surely, 2^{20112222221211} is an apocalyptic number.

20112222221211 is a deficient number, since it is larger than the sum of its proper divisors (6707874058933).

20112222221211 is an equidigital number, since it uses as much as digits as its factorization.

20112222221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949996301.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20112222221211 its reverse (11212222221102), we get a palindrome (31324444442313).

The spelling of 20112222221211 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".