1200020201009 has 4 divisors (see below), whose sum is σ = 1371451658304. Its totient is φ = 1028588743716.

The previous prime is 1200020200997. The next prime is 1200020201053. The reversal of 1200020201009 is 9001020200021.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200020201009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200020201909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85715728637 + ... + 85715728650.

It is an arithmetic number, because the mean of its divisors is an integer number (342862914576).

Almost surely, 2^{1200020201009} is an apocalyptic number.

It is an amenable number.

1200020201009 is a deficient number, since it is larger than the sum of its proper divisors (171431457295).

1200020201009 is an equidigital number, since it uses as much as digits as its factorization.

1200020201009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171431457294.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 1200020201009 in words is "one trillion, two hundred billion, twenty million, two hundred one thousand, nine".