1110421221 has 16 divisors (see below), whose sum is σ = 1822230144. Its totient is φ = 585716544.

The previous prime is 1110421189. The next prime is 1110421231. The reversal of 1110421221 is 1221240111.

It is not a de Polignac number, because 1110421221 - 2⁵ = 1110421189 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1110421221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110421231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2033466 + ... + 2034011.

It is an arithmetic number, because the mean of its divisors is an integer number (113889384).

Almost surely, 2^1110421221 is an apocalyptic number.

It is an amenable number.

1110421221 is a deficient number, since it is larger than the sum of its proper divisors (711808923).

1110421221 is a wasteful number, since it uses less digits than its factorization.

1110421221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067500.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1110421221 is about 33322.9833748421. The cubic root of 1110421221 is about 1035.5297593716.

Adding to 1110421221 its reverse (1221240111), we get a palindrome (2331661332).

The spelling of 1110421221 in words is "one billion, one hundred ten million, four hundred twenty-one thousand, two hundred twenty-one".