1100144221 has 24 divisors (see below), whose sum is σ = 1240836800. Its totient is φ = 974350080.

The previous prime is 1100144209. The next prime is 1100144233. The reversal of 1100144221 is 1224410011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1100144209) and next prime (1100144233).

It is not a de Polignac number, because 1100144221 - 2⁵ = 1100144189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100144195 and 1100144204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100144291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 785680 + ... + 787078.

Almost surely, 2^1100144221 is an apocalyptic number.

1100144221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100144221 is a deficient number, since it is larger than the sum of its proper divisors (140692579).

1100144221 is a wasteful number, since it uses less digits than its factorization.

1100144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1100144221 is about 33168.4220456747. The cubic root of 1100144221 is about 1032.3252275669.

Adding to 1100144221 its reverse (1224410011), we get a palindrome (2324554232).

The spelling of 1100144221 in words is "one billion, one hundred million, one hundred forty-four thousand, two hundred twenty-one".