21122210222109 has 12 divisors (see below), whose sum is σ = 30511428334816. Its totient is φ = 14080749269832.

The previous prime is 21122210222053. The next prime is 21122210222143. The reversal of 21122210222109 is 90122201222112.

21122210222109 is a `hidden beast` number, since 2 + 1 + 122 + 210 + 222 + 109 = 666.

It is not a de Polignac number, because 21122210222109 - 2¹¹ = 21122210220061 is a prime.

It is a super-2 number, since 2×21122210222109² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122210220109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60166219 + ... + 60516264.

Almost surely, 2^{21122210222109} is an apocalyptic number.

It is an amenable number.

21122210222109 is a deficient number, since it is larger than the sum of its proper divisors (9389218112707).

21122210222109 is a wasteful number, since it uses less digits than its factorization.

21122210222109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120701936 (or 120701933 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 21122210222109 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, two hundred twenty-two thousand, one hundred nine".