211222100000209 has 32 divisors (see below), whose sum is σ = 235779576164352. Its totient is φ = 188286148992000.

The previous prime is 211222100000113. The next prime is 211222100000237. The reversal of 211222100000209 is 902000001222112.

It is a cyclic number.

It is not a de Polignac number, because 211222100000209 - 2¹⁹ = 211222099475921 is a prime.

It is a super-2 number, since 2×211222100000209² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211222100000209.

It is not an unprimeable number, because it can be changed into a prime (211222100000239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1173489999 + ... + 1173669979.

It is an arithmetic number, because the mean of its divisors is an integer number (7368111755136).

Almost surely, 2^{211222100000209} is an apocalyptic number.

It is an amenable number.

211222100000209 is a deficient number, since it is larger than the sum of its proper divisors (24557476164143).

211222100000209 is a wasteful number, since it uses less digits than its factorization.

211222100000209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227457.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 211222100000209 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred million, two hundred nine", and thus it is an aban number.