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22220101 = 1910111579
BaseRepresentation
bin101010011000…
…0110101000101
31112210220020201
41110300311011
521142020401
62112130501
7356603431
oct124606505
945726221
1022220101
11115a7322
127536a31
1347acab7
142d459c1
151e3db01
hex1530d45

22220101 has 8 divisors (see below), whose sum is σ = 23623200. Its totient is φ = 20840400.

The previous prime is 22220083. The next prime is 22220113. The reversal of 22220101 is 10102222.

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 22220101 - 27 = 22219973 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 (22220131) 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, 3871 + ... + 7708.

It is an arithmetic number, because the mean of its divisors is an integer number (2952900).

Almost surely, 222220101 is an apocalyptic number.

It is an amenable number.

22220101 is a deficient number, since it is larger than the sum of its proper divisors (1403099).

22220101 is a wasteful number, since it uses less digits than its factorization.

22220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11699.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 22220101 is about 4713.8202129483. The cubic root of 22220101 is about 281.1352759420.

Adding to 22220101 its reverse (10102222), we get a palindrome (32322323).

The spelling of 22220101 in words is "twenty-two million, two hundred twenty thousand, one hundred one".

Divisors: 1 19 101 1919 11579 220001 1169479 22220101