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12203211001 = 64811882921
BaseRepresentation
bin10110101110101111…
…00011100011111001
31011111110111100102211
423113113203203321
5144443010223001
65334525055121
7611256403432
oct132727434371
934443440384
1012203211001
1151a2438053
1224469b74a1
1311c62a4517
1483a9d8489
154b6511351
hex2d75e38f9

12203211001 has 4 divisors (see below), whose sum is σ = 12205100404. Its totient is φ = 12201321600.

The previous prime is 12203210983. The next prime is 12203211019. The reversal of 12203211001 is 10011230221.

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

It is an interprime number because it is at equal distance from previous prime (12203210983) and next prime (12203211019).

It can be written as a sum of positive squares in 2 ways, for example, as 10903536400 + 1299674601 = 104420^2 + 36051^2 .

It is a cyclic number.

It is not a de Polignac number, because 12203211001 - 233 = 3613276409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12203212001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934980 + ... + 947941.

It is an arithmetic number, because the mean of its divisors is an integer number (3051275101).

Almost surely, 212203211001 is an apocalyptic number.

It is an amenable number.

12203211001 is a deficient number, since it is larger than the sum of its proper divisors (1889403).

12203211001 is an equidigital number, since it uses as much as digits as its factorization.

12203211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889402.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12203211001 its reverse (10011230221), we get a palindrome (22214441222).

The spelling of 12203211001 in words is "twelve billion, two hundred three million, two hundred eleven thousand, one".

Divisors: 1 6481 1882921 12203211001