2120202001009 has 4 divisors (see below), whose sum is σ = 2120787210816. Its totient is φ = 2119616791204.

The previous prime is 2120202000989. The next prime is 2120202001013. The reversal of 2120202001009 is 9001002020212.

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-2120202001009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120202001079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292599469 + ... + 292606714.

It is an arithmetic number, because the mean of its divisors is an integer number (530196802704).

Almost surely, 2^{2120202001009} is an apocalyptic number.

It is an amenable number.

2120202001009 is a deficient number, since it is larger than the sum of its proper divisors (585209807).

2120202001009 is an equidigital number, since it uses as much as digits as its factorization.

2120202001009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585209806.

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

The spelling of 2120202001009 in words is "two trillion, one hundred twenty billion, two hundred two million, one thousand, nine".