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12201022222201 = 61557359096513
BaseRepresentation
bin1011000110001100010110…
…0110000110111101111001
31121012101222012212001112101
42301203011212012331321
53044400143142102301
641541023333543401
72366331463503121
oct261430546067571
947171865761471
1012201022222201
113984473a6773a
1214507817a4b61
136a6722729967
14302765753c81
1516259aeb5701
hexb18c5986f79

12201022222201 has 8 divisors (see below), whose sum is σ = 12423302998344. Its totient is φ = 11979459640320.

The previous prime is 12201022222183. The next prime is 12201022222211. The reversal of 12201022222201 is 10222222010221.

It can be written as a sum of positive squares in 4 ways, for example, as 9053332201 + 12191968890000 = 95149^2 + 3491700^2 .

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 12201022222201 - 213 = 12201022214009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201022222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179514280 + ... + 179582233.

It is an arithmetic number, because the mean of its divisors is an integer number (1552912874793).

Almost surely, 212201022222201 is an apocalyptic number.

It is an amenable number.

12201022222201 is a deficient number, since it is larger than the sum of its proper divisors (222280776143).

12201022222201 is an equidigital number, since it uses as much as digits as its factorization.

12201022222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359097131.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12201022222201 its reverse (10222222010221), we get a palindrome (22423244232422).

The spelling of 12201022222201 in words is "twelve trillion, two hundred one billion, twenty-two million, two hundred twenty-two thousand, two hundred one".

Divisors: 1 61 557 33977 359096513 21904887293 200016757741 12201022222201