1000221112 has 64 divisors (see below), whose sum is σ = 2172614400. Its totient is φ = 426647040.

The previous prime is 1000221109. The next prime is 1000221137. The reversal of 1000221112 is 2111220001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655983 + ... + 657505.

It is an arithmetic number, because the mean of its divisors is an integer number (33947100).

Almost surely, 2^1000221112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000221112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086307200).

1000221112 is an abundant number, since it is smaller than the sum of its proper divisors (1172393288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000221112 is a wasteful number, since it uses less digits than its factorization.

1000221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1992 counting only the distinct ones).

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

The square root of 1000221112 is about 31626.2724961384. The cubic root of 1000221112 is about 1000.0736985684.

Adding to 1000221112 its reverse (2111220001), we get a palindrome (3111441113).

The spelling of 1000221112 in words is "one billion, two hundred twenty-one thousand, one hundred twelve".