9212212020211 has 4 divisors (see below), whose sum is σ = 9216490801752. Its totient is φ = 9207933238672.

The previous prime is 9212212020181. The next prime is 9212212020229. The reversal of 9212212020211 is 1120202122129.

It is a happy number.

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 9212212020211 - 2³⁹ = 8662456206323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9212212020811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2139387541 + ... + 2139391846.

It is an arithmetic number, because the mean of its divisors is an integer number (2304122700438).

Almost surely, 2^{9212212020211} is an apocalyptic number.

9212212020211 is a deficient number, since it is larger than the sum of its proper divisors (4278781541).

9212212020211 is a wasteful number, since it uses less digits than its factorization.

9212212020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278781540.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 9212212020211 in words is "nine trillion, two hundred twelve billion, two hundred twelve million, twenty thousand, two hundred eleven".