1100010221 has 4 divisors (see below), whose sum is σ = 1116428352. Its totient is φ = 1083592092.

The previous prime is 1100010173. The next prime is 1100010229. The reversal of 1100010221 is 1220100011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1220100011 = 13 ⋅93853847.

It is a cyclic number.

It is not a de Polignac number, because 1100010221 - 2⁶ = 1100010157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100010199 and 1100010208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100010229) 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, 8208965 + ... + 8209098.

It is an arithmetic number, because the mean of its divisors is an integer number (279107088).

Almost surely, 2^1100010221 is an apocalyptic number.

It is an amenable number.

1100010221 is a deficient number, since it is larger than the sum of its proper divisors (16418131).

1100010221 is an equidigital number, since it uses as much as digits as its factorization.

1100010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16418130.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1100010221 is about 33166.4019905687. The cubic root of 1100010221 is about 1032.2833126995.

Adding to 1100010221 its reverse (1220100011), we get a palindrome (2320110232).

The spelling of 1100010221 in words is "one billion, one hundred million, ten thousand, two hundred twenty-one".