1110002221 has 4 divisors (see below), whose sum is σ = 1120992444. Its totient is φ = 1099012000.

The previous prime is 1110002207. The next prime is 1110002261. The reversal of 1110002221 is 1222000111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222000111 = 101 ⋅12099011.

It can be written as a sum of positive squares in 2 ways, for example, as 917181225 + 192820996 = 30285^2 + 13886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110002221 - 2²¹ = 1107905069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110002198 and 1110002207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110002261) 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, 5494960 + ... + 5495161.

It is an arithmetic number, because the mean of its divisors is an integer number (280248111).

Almost surely, 2^1110002221 is an apocalyptic number.

It is an amenable number.

1110002221 is a deficient number, since it is larger than the sum of its proper divisors (10990223).

1110002221 is a wasteful number, since it uses less digits than its factorization.

1110002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10990222.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1110002221 is about 33316.6958295687. The cubic root of 1110002221 is about 1035.3994960247.

Adding to 1110002221 its reverse (1222000111), we get a palindrome (2332002332).

The spelling of 1110002221 in words is "one billion, one hundred ten million, two thousand, two hundred twenty-one".