1101221206 has 24 divisors (see below), whose sum is σ = 1778819400. Its totient is φ = 511103232.

The previous prime is 1101221197. The next prime is 1101221311. The reversal of 1101221206 is 6021221011.

It is a self number, because there is not a number n which added to its sum of digits gives 1101221206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29145 + ... + 55243.

It is an arithmetic number, because the mean of its divisors is an integer number (74117475).

Almost surely, 2^1101221206 is an apocalyptic number.

1101221206 is a deficient number, since it is larger than the sum of its proper divisors (677598194).

1101221206 is a wasteful number, since it uses less digits than its factorization.

1101221206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26208 (or 26191 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1101221206 is about 33184.6531698012. The cubic root of 1101221206 is about 1032.6619822587.

Adding to 1101221206 its reverse (6021221011), we get a palindrome (7122442217).

The spelling of 1101221206 in words is "one billion, one hundred one million, two hundred twenty-one thousand, two hundred six".