1020201212009 has 8 divisors (see below), whose sum is σ = 1171080562368. Its totient is φ = 870605941680.

The previous prime is 1020201211993. The next prime is 1020201212021. The reversal of 1020201212009 is 9002121020201.

It is a happy number.

1020201212009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1020201212009 - 2⁴ = 1020201211993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020201212059) 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, 321018302 + ... + 321021479.

It is an arithmetic number, because the mean of its divisors is an integer number (146385070296).

Almost surely, 2^{1020201212009} is an apocalyptic number.

It is an amenable number.

1020201212009 is a deficient number, since it is larger than the sum of its proper divisors (150879350359).

1020201212009 is an equidigital number, since it uses as much as digits as its factorization.

1020201212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642040015.

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

The spelling of 1020201212009 in words is "one trillion, twenty billion, two hundred one million, two hundred twelve thousand, nine".