211222222201 has 4 divisors (see below), whose sum is σ = 218035842304. Its totient is φ = 204408602100.

The previous prime is 211222222199. The next prime is 211222222223. The reversal of 211222222201 is 102222222112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211222222201 - 2¹ = 211222222199 is a prime.

It is a super-2 number, since 2×211222222201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211222222801) 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, 3406810005 + ... + 3406810066.

It is an arithmetic number, because the mean of its divisors is an integer number (54508960576).

Almost surely, 2^211222222201 is an apocalyptic number.

It is an amenable number.

211222222201 is a deficient number, since it is larger than the sum of its proper divisors (6813620103).

211222222201 is an equidigital number, since it uses as much as digits as its factorization.

211222222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813620102.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 211222222201 its reverse (102222222112), we get a palindrome (313444444313).

The spelling of 211222222201 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred one".