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BaseRepresentation
bin101010110011…
…010010000101
3210010001002022
4222303102011
510333020401
61040252525
7164240444
oct52632205
923101068
1011220101
116373912
123911145
13242b019
1416c0d5b
15eb971b
hexab3485

11220101 has 8 divisors (see below), whose sum is σ = 11546304. Its totient is φ = 10896480.

The previous prime is 11220091. The next prime is 11220103. The reversal of 11220101 is 10102211.

Adding to 11220101 its reverse (10102211), we get a palindrome (21322312).

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 11220101 - 26 = 11220037 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 (11220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11120 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (1443288).

Almost surely, 211220101 is an apocalyptic number.

It is an amenable number.

11220101 is a deficient number, since it is larger than the sum of its proper divisors (326203).

11220101 is an equidigital number, since it uses as much as digits as its factorization.

11220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 11220101 is about 3349.6419211611. The cubic root of 11220101 is about 223.8715582213.

The spelling of 11220101 in words is "eleven million, two hundred twenty thousand, one hundred one".

Divisors: 1 41 283 967 11603 39647 273661 11220101