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11122200221 = 111953216269
BaseRepresentation
bin10100101101110111…
…10100111010011101
31001201010101022102112
422112323310322131
5140234240401341
65035351203405
7542422066466
oct122673647235
931633338375
1011122200221
114798212710
1221a4976565
131083341b82
147771ddd6d
1545167baeb
hex296ef4e9d

11122200221 has 8 divisors (see below), whose sum is σ = 12771904800. Its totient is φ = 9578928240.

The previous prime is 11122200209. The next prime is 11122200227. The reversal of 11122200221 is 12200222111.

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 11122200221 - 210 = 11122199197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11122200196 and 11122200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122200227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26607926 + ... + 26608343.

It is an arithmetic number, because the mean of its divisors is an integer number (1596488100).

Almost surely, 211122200221 is an apocalyptic number.

11122200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122200221 is a deficient number, since it is larger than the sum of its proper divisors (1649704579).

11122200221 is a wasteful number, since it uses less digits than its factorization.

11122200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53216299.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11122200221 its reverse (12200222111), we get a palindrome (23322422332).

The spelling of 11122200221 in words is "eleven billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-one".

Divisors: 1 11 19 209 53216269 585378959 1011109111 11122200221