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111011201221 = 319803365297
BaseRepresentation
bin110011101100011001…
…0001000000011000101
3101121112120011022200011
41213120302020003011
53304322331414341
6122555311150221
711006650432654
oct1473062100305
9347476138604
10111011201221
1143096a245a8
1219621515371
13a611b5961b
14553160919b
152d4ac8cb81
hex19d8c880c5

111011201221 has 8 divisors (see below), whose sum is σ = 114604210944. Its totient is φ = 107418941760.

The previous prime is 111011201153. The next prime is 111011201263. The reversal of 111011201221 is 122102110111.

It is a happy number.

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 111011201221 - 225 = 110977646789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011201281) 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, 121245 + ... + 486541.

It is an arithmetic number, because the mean of its divisors is an integer number (14325526368).

Almost surely, 2111011201221 is an apocalyptic number.

It is an amenable number.

111011201221 is a deficient number, since it is larger than the sum of its proper divisors (3593009723).

111011201221 is an equidigital number, since it uses as much as digits as its factorization.

111011201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375131.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111011201221 its reverse (122102110111), we get a palindrome (233113311332).

The spelling of 111011201221 in words is "one hundred eleven billion, eleven million, two hundred one thousand, two hundred twenty-one".

Divisors: 1 31 9803 303893 365297 11324207 3581006491 111011201221