211221022222209 has 8 divisors (see below), whose sum is σ = 281628889649920. Its totient is φ = 140813584804656.

The previous prime is 211221022222157. The next prime is 211221022222253. The reversal of 211221022222209 is 902222220122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211221022222209 - 2¹³ = 211221022214017 is a prime.

It is a super-2 number, since 2×211221022222209² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221022222289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106354654 + ... + 108322455.

It is an arithmetic number, because the mean of its divisors is an integer number (35203611206240).

Almost surely, 2^{211221022222209} is an apocalyptic number.

It is an amenable number.

211221022222209 is a deficient number, since it is larger than the sum of its proper divisors (70407867427711).

211221022222209 is a wasteful number, since it uses less digits than its factorization.

211221022222209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215005079.

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 211221022222209 in words is "two hundred eleven trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, two hundred nine".