1211002202009 has 8 divisors (see below), whose sum is σ = 1273994136000. Its totient is φ = 1149425817232.

The previous prime is 1211002201967. The next prime is 1211002202021. The reversal of 1211002202009 is 9002022001121.

It is a happy number.

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

It is not a de Polignac number, because 1211002202009 - 2¹⁶ = 1211002136473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211002202029) 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 7 ways as a sum of consecutive naturals, for example, 353885549 + ... + 353888970.

It is an arithmetic number, because the mean of its divisors is an integer number (159249267000).

Almost surely, 2^{1211002202009} is an apocalyptic number.

It is an amenable number.

1211002202009 is a deficient number, since it is larger than the sum of its proper divisors (62991933991).

1211002202009 is an equidigital number, since it uses as much as digits as its factorization.

1211002202009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707774607.

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

The spelling of 1211002202009 in words is "one trillion, two hundred eleven billion, two million, two hundred two thousand, nine".