1000221101 has 8 divisors (see below), whose sum is σ = 1091413344. Its totient is φ = 909072720.

The previous prime is 1000221083. The next prime is 1000221109. The reversal of 1000221101 is 1011220001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000221101 - 2¹⁰ = 1000220077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52946 + ... + 69308.

It is an arithmetic number, because the mean of its divisors is an integer number (136426668).

Almost surely, 2^1000221101 is an apocalyptic number.

1000221101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000221101 is a deficient number, since it is larger than the sum of its proper divisors (91192243).

1000221101 is a wasteful number, since it uses less digits than its factorization.

1000221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21931.

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

The square root of 1000221101 is about 31626.2723222323. The cubic root of 1000221101 is about 1000.0736949023.

Adding to 1000221101 its reverse (1011220001), we get a palindrome (2011441102).

The spelling of 1000221101 in words is "one billion, two hundred twenty-one thousand, one hundred one".