20221212120211 has 4 divisors (see below), whose sum is σ = 20918495296800. Its totient is φ = 19523928943624.

The previous prime is 20221212120173. The next prime is 20221212120323. The reversal of 20221212120211 is 11202121212202.

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 20221212120211 - 2⁹ = 20221212119699 is a prime.

It is a super-2 number, since 2×20221212120211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221212129211) 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 in 3 ways as a sum of consecutive naturals, for example, 348641588251 + ... + 348641588308.

It is an arithmetic number, because the mean of its divisors is an integer number (5229623824200).

Almost surely, 2^{20221212120211} is an apocalyptic number.

20221212120211 is a deficient number, since it is larger than the sum of its proper divisors (697283176589).

20221212120211 is an equidigital number, since it uses as much as digits as its factorization.

20221212120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697283176588.

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

Adding to 20221212120211 its reverse (11202121212202), we get a palindrome (31423333332413).

The spelling of 20221212120211 in words is "twenty trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twenty thousand, two hundred eleven".