1201022002009 has 4 divisors (see below), whose sum is σ = 1201284066816. Its totient is φ = 1200759937204.

The previous prime is 1201022002007. The next prime is 1201022002013. The reversal of 1201022002009 is 9002002201021.

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 not a de Polignac number, because 1201022002009 - 2¹ = 1201022002007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201022002007) 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, 131025529 + ... + 131034694.

It is an arithmetic number, because the mean of its divisors is an integer number (300321016704).

Almost surely, 2^{1201022002009} is an apocalyptic number.

It is an amenable number.

1201022002009 is a deficient number, since it is larger than the sum of its proper divisors (262064807).

1201022002009 is an equidigital number, since it uses as much as digits as its factorization.

1201022002009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262064806.

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

The spelling of 1201022002009 in words is "one trillion, two hundred one billion, twenty-two million, two thousand, nine".