202120020109 has 8 divisors (see below), whose sum is σ = 231059792960. Its totient is φ = 173196618336.

The previous prime is 202120020101. The next prime is 202120020121. The reversal of 202120020109 is 901020021202.

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

It is not a de Polignac number, because 202120020109 - 2³ = 202120020101 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 (202120020101) 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, 4066299 + ... + 4115704.

It is an arithmetic number, because the mean of its divisors is an integer number (28882474120).

Almost surely, 2^202120020109 is an apocalyptic number.

It is an amenable number.

202120020109 is a deficient number, since it is larger than the sum of its proper divisors (28939772851).

202120020109 is an equidigital number, since it uses as much as digits as its factorization.

202120020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8185539.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 202120020109 in words is "two hundred two billion, one hundred twenty million, twenty thousand, one hundred nine".