1101221110 has 16 divisors (see below), whose sum is σ = 2162398032. Its totient is φ = 400444000.

The previous prime is 1101221039. The next prime is 1101221111. The reversal of 1101221110 is 111221011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101221111) 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, 5005441 + ... + 5005660.

It is an arithmetic number, because the mean of its divisors is an integer number (135149877).

Almost surely, 2^1101221110 is an apocalyptic number.

1101221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1101221110 is a deficient number, since it is larger than the sum of its proper divisors (1061176922).

1101221110 is a wasteful number, since it uses less digits than its factorization.

1101221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011119.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1101221110 is about 33184.6517233495. The cubic root of 1101221110 is about 1032.6619522509.

Adding to 1101221110 its reverse (111221011), we get a palindrome (1212442121).

Subtracting from 1101221110 its reverse (111221011), we obtain a palindrome (990000099).

The spelling of 1101221110 in words is "one billion, one hundred one million, two hundred twenty-one thousand, one hundred ten".