22121220210211 has 4 divisors (see below), whose sum is σ = 22130867495632. Its totient is φ = 22111572924792.

The previous prime is 22121220210163. The next prime is 22121220210259. The reversal of 22121220210211 is 11201202212122.

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

It is an interprime number because it is at equal distance from previous prime (22121220210163) and next prime (22121220210259).

It is a cyclic number.

It is not a de Polignac number, because 22121220210211 - 2³⁷ = 21983781256739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121223210211) 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, 4823639271 + ... + 4823643856.

It is an arithmetic number, because the mean of its divisors is an integer number (5532716873908).

Almost surely, 2^{22121220210211} is an apocalyptic number.

22121220210211 is a deficient number, since it is larger than the sum of its proper divisors (9647285421).

22121220210211 is an equidigital number, since it uses as much as digits as its factorization.

22121220210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9647285420.

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

Adding to 22121220210211 its reverse (11201202212122), we get a palindrome (33322422422333).

The spelling of 22121220210211 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, two hundred eleven".