22121002210211 has 2 divisors, whose sum is σ = 22121002210212. Its totient is φ = 22121002210210.

The previous prime is 22121002210183. The next prime is 22121002210243. The reversal of 22121002210211 is 11201220012122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121002210211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22121002210211.

It is not a weakly prime, because it can be changed into another prime (22121002210271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060501105105 + 11060501105106.

It is an arithmetic number, because the mean of its divisors is an integer number (11060501105106).

Almost surely, 2^{22121002210211} is an apocalyptic number.

22121002210211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121002210211 is an equidigital number, since it uses as much as digits as its factorization.

22121002210211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22121002210211 its reverse (11201220012122), we get a palindrome (33322222222333).

The spelling of 22121002210211 in words is "twenty-two trillion, one hundred twenty-one billion, two million, two hundred ten thousand, two hundred eleven".