11021221205 has 8 divisors (see below), whose sum is σ = 13237913472. Its totient is φ = 8808678288.

The previous prime is 11021221201. The next prime is 11021221207. The reversal of 11021221205 is 50212212011.

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 11021221205 - 2² = 11021221201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021221201) 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, 1031489 + ... + 1042118.

It is an arithmetic number, because the mean of its divisors is an integer number (1654739184).

Almost surely, 2^11021221205 is an apocalyptic number.

It is an amenable number.

11021221205 is a deficient number, since it is larger than the sum of its proper divisors (2216692267).

11021221205 is a wasteful number, since it uses less digits than its factorization.

11021221205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074675.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 11021221205 its reverse (50212212011), we get a palindrome (61233433216).

The spelling of 11021221205 in words is "eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred five".