22212222202211 has 4 divisors (see below), whose sum is σ = 22212596513424. Its totient is φ = 22211847891000.

The previous prime is 22212222202169. The next prime is 22212222202243. The reversal of 22212222202211 is 11220222221222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22212222202211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212222202111) 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, 187066580 + ... + 187185281.

It is an arithmetic number, because the mean of its divisors is an integer number (5553149128356).

Almost surely, 2^{22212222202211} is an apocalyptic number.

22212222202211 is a deficient number, since it is larger than the sum of its proper divisors (374311213).

22212222202211 is an equidigital number, since it uses as much as digits as its factorization.

22212222202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374311212.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 22212222202211 its reverse (11220222221222), we get a palindrome (33432444423433).

The spelling of 22212222202211 in words is "twenty-two trillion, two hundred twelve billion, two hundred twenty-two million, two hundred two thousand, two hundred eleven".