1020200201209 has 4 divisors (see below), whose sum is σ = 1165943087104. Its totient is φ = 874457315316.

The previous prime is 1020200201183. The next prime is 1020200201213. The reversal of 1020200201209 is 9021020020201.

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-1020200201209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020200201509) 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, 72871442937 + ... + 72871442950.

It is an arithmetic number, because the mean of its divisors is an integer number (291485771776).

Almost surely, 2^{1020200201209} is an apocalyptic number.

It is an amenable number.

1020200201209 is a deficient number, since it is larger than the sum of its proper divisors (145742885895).

1020200201209 is an equidigital number, since it uses as much as digits as its factorization.

1020200201209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145742885894.

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

The spelling of 1020200201209 in words is "one trillion, twenty billion, two hundred million, two hundred one thousand, two hundred nine".