1110012221 has 4 divisors (see below), whose sum is σ = 1119835452. Its totient is φ = 1100188992.

The previous prime is 1110012217. The next prime is 1110012227. The reversal of 1110012221 is 1222100111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222100111 = 13381 ⋅91331.

It can be written as a sum of positive squares in 2 ways, for example, as 289476196 + 820536025 = 17014^2 + 28645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110012221 - 2² = 1110012217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110012227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4911446 + ... + 4911671.

It is an arithmetic number, because the mean of its divisors is an integer number (279958863).

Almost surely, 2^1110012221 is an apocalyptic number.

It is an amenable number.

1110012221 is a deficient number, since it is larger than the sum of its proper divisors (9823231).

1110012221 is an equidigital number, since it uses as much as digits as its factorization.

1110012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9823230.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1110012221 is about 33316.8459041368. The cubic root of 1110012221 is about 1035.4026053170.

Adding to 1110012221 its reverse (1222100111), we get a palindrome (2332112332).

The spelling of 1110012221 in words is "one billion, one hundred ten million, twelve thousand, two hundred twenty-one".