222101211220211 has 4 divisors (see below), whose sum is σ = 222101515377024. Its totient is φ = 222100907063400.

The previous prime is 222101211220153. The next prime is 222101211220219. The reversal of 222101211220211 is 112022112101222.

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 222101211220211 - 2³⁴ = 222084031351027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222101211220219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150980435 + ... + 152444396.

It is an arithmetic number, because the mean of its divisors is an integer number (55525378844256).

Almost surely, 2^{222101211220211} is an apocalyptic number.

222101211220211 is a deficient number, since it is larger than the sum of its proper divisors (304156813).

222101211220211 is an equidigital number, since it uses as much as digits as its factorization.

222101211220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304156812.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222101211220211 its reverse (112022112101222), we get a palindrome (334123323321433).

The spelling of 222101211220211 in words is "two hundred twenty-two trillion, one hundred one billion, two hundred eleven million, two hundred twenty thousand, two hundred eleven".