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12233200121 = 18177578713
BaseRepresentation
bin10110110010010011…
…11101000111111001
31011120112220221202222
423121021331013321
5200023144400441
65341515533425
7612102325322
oct133111750771
934515827688
1012233200121
11520836034a
122454a5a275
1311cc57456c
148409a3449
154b8e86d4b
hex2d927d1f9

12233200121 has 8 divisors (see below), whose sum is σ = 12303784584. Its totient is φ = 12162648960.

The previous prime is 12233200097. The next prime is 12233200139. The reversal of 12233200121 is 12100233221.

It can be written as a sum of positive squares in 4 ways, for example, as 3177013225 + 9056186896 = 56365^2 + 95164^2 .

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 12233200121 - 214 = 12233183737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12233200121.

It is not an unprimeable number, because it can be changed into a prime (12233200621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399661 + ... + 1408373.

It is an arithmetic number, because the mean of its divisors is an integer number (1537973073).

Almost surely, 212233200121 is an apocalyptic number.

It is an amenable number.

12233200121 is a deficient number, since it is larger than the sum of its proper divisors (70584463).

12233200121 is an equidigital number, since it uses as much as digits as its factorization.

12233200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16651.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12233200121 its reverse (12100233221), we get a palindrome (24333433342).

The spelling of 12233200121 in words is "twelve billion, two hundred thirty-three million, two hundred thousand, one hundred twenty-one".

Divisors: 1 181 7757 8713 1404017 1577053 67586741 12233200121