1101123221 has 8 divisors (see below), whose sum is σ = 1201493088. Its totient is φ = 1000798000.

The previous prime is 1101123187. The next prime is 1101123227. The reversal of 1101123221 is 1223211011.

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 1101123221 - 2⁶ = 1101123157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101123196 and 1101123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101123227) 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, 60386 + ... + 76476.

It is an arithmetic number, because the mean of its divisors is an integer number (150186636).

Almost surely, 2^1101123221 is an apocalyptic number.

1101123221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101123221 is a deficient number, since it is larger than the sum of its proper divisors (100369867).

1101123221 is a wasteful number, since it uses less digits than its factorization.

1101123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22323.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1101123221 is about 33183.1767767946. The cubic root of 1101123221 is about 1032.6313531156.

Adding to 1101123221 its reverse (1223211011), we get a palindrome (2324334232).

The spelling of 1101123221 in words is "one billion, one hundred one million, one hundred twenty-three thousand, two hundred twenty-one".