1101000221 has 4 divisors (see below), whose sum is σ = 1113371100. Its totient is φ = 1088629344.

The previous prime is 1101000191. The next prime is 1101000301. The reversal of 1101000221 is 1220001011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1220001011 = 53 ⋅23018887.

It can be written as a sum of positive squares in 2 ways, for example, as 312794596 + 788205625 = 17686^2 + 28075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101000221 - 2²² = 1096805917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101000199 and 1101000208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101000721) 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, 6185306 + ... + 6185483.

It is an arithmetic number, because the mean of its divisors is an integer number (278342775).

Almost surely, 2^1101000221 is an apocalyptic number.

It is an amenable number.

1101000221 is a deficient number, since it is larger than the sum of its proper divisors (12370879).

1101000221 is an equidigital number, since it uses as much as digits as its factorization.

1101000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370878.

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

The square root of 1101000221 is about 33181.3233762609. The cubic root of 1101000221 is about 1032.5929019585.

Adding to 1101000221 its reverse (1220001011), we get a palindrome (2321001232).

The spelling of 1101000221 in words is "one billion, one hundred one million, two hundred twenty-one", and thus it is an aban number.