212110220109 has 32 divisors (see below), whose sum is σ = 305352334080. Its totient is φ = 130566256128.

The previous prime is 212110220081. The next prime is 212110220111. The reversal of 212110220109 is 901022011212.

It is not a de Polignac number, because 212110220109 - 2¹³ = 212110211917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212110220909) 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 31 ways as a sum of consecutive naturals, for example, 12744057 + ... + 12760689.

It is an arithmetic number, because the mean of its divisors is an integer number (9542260440).

Almost surely, 2^212110220109 is an apocalyptic number.

212110220109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

212110220109 is a deficient number, since it is larger than the sum of its proper divisors (93242113971).

212110220109 is a wasteful number, since it uses less digits than its factorization.

212110220109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23061.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 212110220109 in words is "two hundred twelve billion, one hundred ten million, two hundred twenty thousand, one hundred nine".