112220001 has 12 divisors (see below), whose sum is σ = 166477012. Its totient is φ = 72791136.

The previous prime is 112219999. The next prime is 112220021. The reversal of 112220001 is 100022211.

It can be written as a sum of positive squares in 2 ways, for example, as 96059601 + 16160400 = 9801^2 + 4020^2 .

It is not a de Polignac number, because 112220001 - 2¹ = 112219999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168166 + ... + 168831.

Almost surely, 2^112220001 is an apocalyptic number.

It is an amenable number.

112220001 is a deficient number, since it is larger than the sum of its proper divisors (54257011).

112220001 is a wasteful number, since it uses less digits than its factorization.

112220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337040 (or 337037 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 112220001 is about 10593.3942152645. The cubic root of 112220001 is about 482.3438617090.

Adding to 112220001 its reverse (100022211), we get a palindrome (212242212).

The spelling of 112220001 in words is "one hundred twelve million, two hundred twenty thousand, one".