11021220202009 has 4 divisors (see below), whose sum is σ = 11022432533200. Its totient is φ = 11020007870820.

The previous prime is 11021220202001. The next prime is 11021220202033. The reversal of 11021220202009 is 90020202212011.

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 11021220202009 - 2³ = 11021220202001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021220202001) 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, 606151959 + ... + 606170140.

It is an arithmetic number, because the mean of its divisors is an integer number (2755608133300).

Almost surely, 2^{11021220202009} is an apocalyptic number.

It is an amenable number.

11021220202009 is a deficient number, since it is larger than the sum of its proper divisors (1212331191).

11021220202009 is an equidigital number, since it uses as much as digits as its factorization.

11021220202009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212331190.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 11021220202009 in words is "eleven trillion, twenty-one billion, two hundred twenty million, two hundred two thousand, nine".