212020120109 has 8 divisors (see below), whose sum is σ = 242654375808. Its totient is φ = 181472281200.

The previous prime is 212020120057. The next prime is 212020120121. The reversal of 212020120109 is 901021020212.

It is a happy number.

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

It is not a de Polignac number, because 212020120109 - 2²⁰ = 212019071533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020120709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21598937 + ... + 21608750.

It is an arithmetic number, because the mean of its divisors is an integer number (30331796976).

Almost surely, 2^212020120109 is an apocalyptic number.

It is an amenable number.

212020120109 is a deficient number, since it is larger than the sum of its proper divisors (30634255699).

212020120109 is an equidigital number, since it uses as much as digits as its factorization.

212020120109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43208395.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 212020120109 in words is "two hundred twelve billion, twenty million, one hundred twenty thousand, one hundred nine".