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11212019 = 713123209
BaseRepresentation
bin101010110001…
…010011110011
3210002121222222
4222301103303
510332241034
61040151255
7164205050
oct52612363
923077888
1011212019
116368835
12390852b
132427440
1416bc027
15eb712e
hexab14f3

11212019 has 8 divisors (see below), whose sum is σ = 13799520. Its totient is φ = 8870976.

The previous prime is 11212013. The next prime is 11212037. The reversal of 11212019 is 91021211.

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 11212019 - 28 = 11211763 is a prime.

It is a super-2 number, since 2×112120192 = 251418740112722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11211988 and 11212006.

It is not an unprimeable number, because it can be changed into a prime (11212013) 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, 61514 + ... + 61695.

It is an arithmetic number, because the mean of its divisors is an integer number (1724940).

Almost surely, 211212019 is an apocalyptic number.

11212019 is a deficient number, since it is larger than the sum of its proper divisors (2587501).

11212019 is a wasteful number, since it uses less digits than its factorization.

11212019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123229.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 11212019 is about 3348.4353062289. The cubic root of 11212019 is about 223.8177926763.

The spelling of 11212019 in words is "eleven million, two hundred twelve thousand, nineteen".

Divisors: 1 7 13 91 123209 862463 1601717 11212019