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2230013221 = 2299738049
BaseRepresentation
bin1000010011101011…
…0100110100100101
312202102011102001021
42010322310310211
514031340410341
61005140531141
7106155541162
oct20472646445
95672142037
102230013221
11a44869a37
125229b0ab1
1329700c667
14172251069
15d0b999d1
hex84eb4d25

2230013221 has 4 divisors (see below), whose sum is σ = 2239751500. Its totient is φ = 2220274944.

The previous prime is 2230013167. The next prime is 2230013237. The reversal of 2230013221 is 1223100322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1223100322 = 2611550161.

It can be written as a sum of positive squares in 2 ways, for example, as 1773336321 + 456676900 = 42111^2 + 21370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2230013221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2230013195 and 2230013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230013251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4868796 + ... + 4869253.

It is an arithmetic number, because the mean of its divisors is an integer number (559937875).

Almost surely, 22230013221 is an apocalyptic number.

It is an amenable number.

2230013221 is a deficient number, since it is larger than the sum of its proper divisors (9738279).

2230013221 is an equidigital number, since it uses as much as digits as its factorization.

2230013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9738278.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2230013221 is about 47223.0157973842. The cubic root of 2230013221 is about 1306.4791380697.

Adding to 2230013221 its reverse (1223100322), we get a palindrome (3453113543).

The spelling of 2230013221 in words is "two billion, two hundred thirty million, thirteen thousand, two hundred twenty-one".

Divisors: 1 229 9738049 2230013221