212122211109 has 8 divisors (see below), whose sum is σ = 282832084800. Its totient is φ = 141413572416.

The previous prime is 212122211107. The next prime is 212122211123. The reversal of 212122211109 is 901112221212.

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

It is not a de Polignac number, because 212122211109 - 2¹ = 212122211107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122211107) 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 7 ways as a sum of consecutive naturals, for example, 222717 + ... + 688365.

It is an arithmetic number, because the mean of its divisors is an integer number (35354010600).

Almost surely, 2^212122211109 is an apocalyptic number.

It is an amenable number.

212122211109 is a deficient number, since it is larger than the sum of its proper divisors (70709873691).

212122211109 is a wasteful number, since it uses less digits than its factorization.

212122211109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617499.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 212122211109 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred eleven thousand, one hundred nine".