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12212010133 = 89137213597
BaseRepresentation
bin10110101111110010…
…00111110010010101
31011112002001101120121
423113321013302111
5200002233311013
65335441431541
7611424242041
oct132771076225
934462041517
1012212010133
1151a73a7a64
12244993b5b1
1311c80655cb
1483bc49021
154b719d58d
hex2d7e47c95

12212010133 has 4 divisors (see below), whose sum is σ = 12349223820. Its totient is φ = 12074796448.

The previous prime is 12212010131. The next prime is 12212010179. The reversal of 12212010133 is 33101021221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6463034449 + 5748975684 = 80393^2 + 75822^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212010133 - 21 = 12212010131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212010131) 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, 68606710 + ... + 68606887.

It is an arithmetic number, because the mean of its divisors is an integer number (3087305955).

Almost surely, 212212010133 is an apocalyptic number.

It is an amenable number.

12212010133 is a deficient number, since it is larger than the sum of its proper divisors (137213687).

12212010133 is an equidigital number, since it uses as much as digits as its factorization.

12212010133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137213686.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12212010133 its reverse (33101021221), we get a palindrome (45313031354).

The spelling of 12212010133 in words is "twelve billion, two hundred twelve million, ten thousand, one hundred thirty-three".

Divisors: 1 89 137213597 12212010133