212220200109 has 4 divisors (see below), whose sum is σ = 282960266816. Its totient is φ = 141480133404.

The previous prime is 212220200099. The next prime is 212220200141. The reversal of 212220200109 is 901002022212.

It is a happy number.

212220200109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212220200109 - 2²⁵ = 212186645677 is a prime.

It is a super-2 number, since 2×212220200109² (a number of 23 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 (212220200189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35370033349 + ... + 35370033354.

It is an arithmetic number, because the mean of its divisors is an integer number (70740066704).

Almost surely, 2^212220200109 is an apocalyptic number.

It is an amenable number.

212220200109 is a deficient number, since it is larger than the sum of its proper divisors (70740066707).

212220200109 is an equidigital number, since it uses as much as digits as its factorization.

212220200109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70740066706.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 212220200109 in words is "two hundred twelve billion, two hundred twenty million, two hundred thousand, one hundred nine".