1102002021209 has 4 divisors (see below), whose sum is σ = 1102299782820. Its totient is φ = 1101704259600.

The previous prime is 1102002021199. The next prime is 1102002021223. The reversal of 1102002021209 is 9021202002011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128000803984 + 974001217225 = 357772^2 + 986915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102002021209 - 2⁴ = 1102002021193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1102002023209) 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, 148875254 + ... + 148882655.

It is an arithmetic number, because the mean of its divisors is an integer number (275574945705).

Almost surely, 2^{1102002021209} is an apocalyptic number.

It is an amenable number.

1102002021209 is a deficient number, since it is larger than the sum of its proper divisors (297761611).

1102002021209 is an equidigital number, since it uses as much as digits as its factorization.

1102002021209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297761610.

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

The spelling of 1102002021209 in words is "one trillion, one hundred two billion, two million, twenty-one thousand, two hundred nine".