22121353211 has 2 divisors, whose sum is σ = 22121353212. Its totient is φ = 22121353210.

The previous prime is 22121353187. The next prime is 22121353213. The reversal of 22121353211 is 11235312122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121353211 is a prime.

It is a Sophie Germain prime.

Together with 22121353213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22121353213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060676605 + 11060676606.

It is an arithmetic number, because the mean of its divisors is an integer number (11060676606).

Almost surely, 2^22121353211 is an apocalyptic number.

22121353211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121353211 is an equidigital number, since it uses as much as digits as its factorization.

22121353211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

Adding to 22121353211 its reverse (11235312122), we get a palindrome (33356665333).

The spelling of 22121353211 in words is "twenty-two billion, one hundred twenty-one million, three hundred fifty-three thousand, two hundred eleven".