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12201231233 = 97251501139
BaseRepresentation
bin10110101110100000…
…00000001110000001
31011111022202202201002
423113100000032001
5144442003344413
65334414421345
7611233516502
oct132720001601
934438682632
1012201231233
1151a1305684
122446201855
1311c5a60369
1483a640ba9
154b626e958
hex2d7400381

12201231233 has 8 divisors (see below), whose sum is σ = 12376153440. Its totient is φ = 12027312000.

The previous prime is 12201231173. The next prime is 12201231247. The reversal of 12201231233 is 33213210221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12201231233 is a prime.

It is a super-2 number, since 2×122012312332 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201231433) 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, 226223 + ... + 274916.

It is an arithmetic number, because the mean of its divisors is an integer number (1547019180).

Almost surely, 212201231233 is an apocalyptic number.

It is an amenable number.

12201231233 is a deficient number, since it is larger than the sum of its proper divisors (174922207).

12201231233 is an equidigital number, since it uses as much as digits as its factorization.

12201231233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501487.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12201231233 its reverse (33213210221), we get a palindrome (45414441454).

The spelling of 12201231233 in words is "twelve billion, two hundred one million, two hundred thirty-one thousand, two hundred thirty-three".

Divisors: 1 97 251 24347 501139 48610483 125785889 12201231233