222112121210211 has 4 divisors (see below), whose sum is σ = 296149494946952. Its totient is φ = 148074747473472.

The previous prime is 222112121210191. The next prime is 222112121210219. The reversal of 222112121210211 is 112012121211222.

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

It is a de Polignac number, because none of the positive numbers 2^k-222112121210211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222112121210219) 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, 37018686868366 + ... + 37018686868371.

It is an arithmetic number, because the mean of its divisors is an integer number (74037373736738).

Almost surely, 2^{222112121210211} is an apocalyptic number.

222112121210211 is a deficient number, since it is larger than the sum of its proper divisors (74037373736741).

222112121210211 is an equidigital number, since it uses as much as digits as its factorization.

222112121210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74037373736740.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222112121210211 its reverse (112012121211222), we get a palindrome (334124242421433).

The spelling of 222112121210211 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred ten thousand, two hundred eleven".