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12210220001 = 72961986047
BaseRepresentation
bin10110101111100100…
…10010101111100001
31011111221200102222102
423113302102233201
5200001304020001
65335335220145
7611403105020
oct132762225741
934457612872
1012210220001
1151a6395011
122449217655
1311c7889865
1483b9008b7
154b6e47e6b
hex2d7c92be1

12210220001 has 16 divisors (see below), whose sum is σ = 14672394240. Its totient is φ = 9939343680.

The previous prime is 12210219997. The next prime is 12210220019. The reversal of 12210220001 is 10002201221.

It is a happy number.

It is not a de Polignac number, because 12210220001 - 22 = 12210219997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12210220081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480641 + ... + 505406.

It is an arithmetic number, because the mean of its divisors is an integer number (917024640).

Almost surely, 212210220001 is an apocalyptic number.

It is an amenable number.

12210220001 is a deficient number, since it is larger than the sum of its proper divisors (2462174239).

12210220001 is an equidigital number, since it uses as much as digits as its factorization.

12210220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986144.

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

Adding to 12210220001 its reverse (10002201221), we get a palindrome (22212421222).

The spelling of 12210220001 in words is "twelve billion, two hundred ten million, two hundred twenty thousand, one".

Divisors: 1 7 29 61 203 427 1769 12383 986047 6902329 28595363 60148867 200167541 421042069 1744317143 12210220001