10112221 has 8 divisors (see below), whose sum is σ = 11672064. Its totient is φ = 8581200.

The previous prime is 10112209. The next prime is 10112239. The reversal of 10112221 is 12221101.

10112221 = T₂₁₀ + T₂₁₁ + ... + T₄₁₁.

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 10112221 - 2⁵ = 10112189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10112198 and 10112207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112251) 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 7 ways as a sum of consecutive naturals, for example, 6445 + ... + 7858.

It is an arithmetic number, because the mean of its divisors is an integer number (1459008).

Almost surely, 2^10112221 is an apocalyptic number.

It is an amenable number.

10112221 is a deficient number, since it is larger than the sum of its proper divisors (1559843).

10112221 is a wasteful number, since it uses less digits than its factorization.

10112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411.

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

The square root of 10112221 is about 3179.9718552214. The cubic root of 10112221 is about 216.2463823779.

Adding to 10112221 its reverse (12221101), we get a palindrome (22333322).

It can be divided in two parts, 101 and 12221, that multiplied together give a palindrome (1234321).

The spelling of 10112221 in words is "ten million, one hundred twelve thousand, two hundred twenty-one".