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11001314221 = 43125525091
BaseRepresentation
bin10100011111011101…
…01011101110101101
31001101200220200000021
422033232223232231
5140012314023341
65015352202141
7536423425252
oct121756535655
931350820007
1011001314221
114735a56227
122170399351
1310642978b1
14765133429
15445c4d9d1
hex28fbabbad

11001314221 has 4 divisors (see below), whose sum is σ = 11026839744. Its totient is φ = 10975788700.

The previous prime is 11001314209. The next prime is 11001314239. The reversal of 11001314221 is 12241310011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12241310011 = 71748758573.

It is a cyclic number.

It is not a de Polignac number, because 11001314221 - 211 = 11001312173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001314195 and 11001314204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001314201) 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, 12762115 + ... + 12762976.

It is an arithmetic number, because the mean of its divisors is an integer number (2756709936).

Almost surely, 211001314221 is an apocalyptic number.

It is an amenable number.

11001314221 is a deficient number, since it is larger than the sum of its proper divisors (25525523).

11001314221 is an equidigital number, since it uses as much as digits as its factorization.

11001314221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25525522.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11001314221 its reverse (12241310011), we get a palindrome (23242624232).

The spelling of 11001314221 in words is "eleven billion, one million, three hundred fourteen thousand, two hundred twenty-one".

Divisors: 1 431 25525091 11001314221