22012211220211 has 4 divisors (see below), whose sum is σ = 22133825647024. Its totient is φ = 21890596793400.

The previous prime is 22012211220203. The next prime is 22012211220281. The reversal of 22012211220211 is 11202211221022.

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 22012211220211 - 2³ = 22012211220203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012211220281) 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, 60807213135 + ... + 60807213496.

It is an arithmetic number, because the mean of its divisors is an integer number (5533456411756).

Almost surely, 2^{22012211220211} is an apocalyptic number.

22012211220211 is a deficient number, since it is larger than the sum of its proper divisors (121614426813).

22012211220211 is a wasteful number, since it uses less digits than its factorization.

22012211220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121614426812.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22012211220211 its reverse (11202211221022), we get a palindrome (33214422441233).

The spelling of 22012211220211 in words is "twenty-two trillion, twelve billion, two hundred eleven million, two hundred twenty thousand, two hundred eleven".