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112102202221 = 4491801138629
BaseRepresentation
bin110100001100111001…
…1111101101101101101
3101201100121001220200121
41220121303331231231
53314041130432341
6123255443124541
711045665665622
oct1503163755555
9351317056617
10112102202221
11435a6852819
1219886973751
13a756ba9249
1455d6484349
152db19474d1
hex1a19cfdb6d

112102202221 has 8 divisors (see below), whose sum is σ = 112415067000. Its totient is φ = 111789619200.

The previous prime is 112102202209. The next prime is 112102202243. The reversal of 112102202221 is 122202201211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8859515625 + 103242686596 = 94125^2 + 321314^2 .

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 112102202221 - 29 = 112102201709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112102202195 and 112102202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112102202521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739335 + ... + 877963.

It is an arithmetic number, because the mean of its divisors is an integer number (14051883375).

Almost surely, 2112102202221 is an apocalyptic number.

It is an amenable number.

112102202221 is a deficient number, since it is larger than the sum of its proper divisors (312864779).

112102202221 is a wasteful number, since it uses less digits than its factorization.

112102202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140879.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 112102202221 its reverse (122202201211), we get a palindrome (234304403432).

The spelling of 112102202221 in words is "one hundred twelve billion, one hundred two million, two hundred two thousand, two hundred twenty-one".

Divisors: 1 449 1801 138629 808649 62244421 249670829 112102202221