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BaseRepresentation
bin1101010110100…
…10101110111101
321210202210212210
412223102232331
5212133342341
615040451033
72530042146
oct653225675
9253683783
10112012221
1158256492
1231619a79
131a28b229
1410c3aacd
159c78c16

112012221 has 8 divisors (see below), whose sum is σ = 149970304. Its totient is φ = 74364480.

The previous prime is 112012217. The next prime is 112012223. The reversal of 112012221 is 122210211.

Adding to 112012221 its reverse (122210211), we get a palindrome (234222432).

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

It is not a de Polignac number, because 112012221 - 22 = 112012217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112012197 and 112012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112012223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 76741 + ... + 78186.

It is an arithmetic number, because the mean of its divisors is an integer number (18746288).

Almost surely, 2112012221 is an apocalyptic number.

It is an amenable number.

112012221 is a deficient number, since it is larger than the sum of its proper divisors (37958083).

112012221 is a wasteful number, since it uses less digits than its factorization.

112012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155171.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 112012221 is about 10583.5826164867. The cubic root of 112012221 is about 482.0459845478.

The spelling of 112012221 in words is "one hundred twelve million, twelve thousand, two hundred twenty-one".