11021120209 has 8 divisors (see below), whose sum is σ = 12057494400. Its totient is φ = 9990488400.

The previous prime is 11021120207. The next prime is 11021120249. The reversal of 11021120209 is 90202112011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11021120209 - 2¹ = 11021120207 is a prime.

It is a super-2 number, since 2×11021120209² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021120207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1431577 + ... + 1439254.

It is an arithmetic number, because the mean of its divisors is an integer number (1507186800).

Almost surely, 2^11021120209 is an apocalyptic number.

It is an amenable number.

11021120209 is a deficient number, since it is larger than the sum of its proper divisors (1036374191).

11021120209 is a wasteful number, since it uses less digits than its factorization.

11021120209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871191.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 11021120209 in words is "eleven billion, twenty-one million, one hundred twenty thousand, two hundred nine".