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12200022101 = 99011232201
BaseRepresentation
bin10110101110010110…
…11001000001010101
31011111020111100002102
423113023121001111
5144441201201401
65334332451445
7611220322361
oct132713310125
934436440072
1012200022101
1151a065a1a3
122445919b85
1311c5728bb7
1483a4082a1
154b60d156b
hex2d72d9055

12200022101 has 4 divisors (see below), whose sum is σ = 12201264204. Its totient is φ = 12198780000.

The previous prime is 12200022091. The next prime is 12200022139. The reversal of 12200022101 is 10122000221.

It is a happy number.

12200022101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11536908100 + 663114001 = 107410^2 + 25751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12200022101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606200 + ... + 626001.

It is an arithmetic number, because the mean of its divisors is an integer number (3050316051).

Almost surely, 212200022101 is an apocalyptic number.

It is an amenable number.

12200022101 is a deficient number, since it is larger than the sum of its proper divisors (1242103).

12200022101 is an equidigital number, since it uses as much as digits as its factorization.

12200022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242102.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12200022101 its reverse (10122000221), we get a palindrome (22322022322).

The spelling of 12200022101 in words is "twelve billion, two hundred million, twenty-two thousand, one hundred one".

Divisors: 1 9901 1232201 12200022101