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12121110097 = 19679521689
BaseRepresentation
bin10110100100111100…
…10111011001010001
31011021202000012011121
423102132113121101
5144311001010342
65322433242241
7606241510255
oct132236273121
934252005147
1012121110097
115160061468
122423403381
1311b2289ac5
1482db46265
154ae1e5067
hex2d2797651

12121110097 has 8 divisors (see below), whose sum is σ = 12949498400. Its totient is φ = 11311765344.

The previous prime is 12121110061. The next prime is 12121110137. The reversal of 12121110097 is 79001112121.

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-12121110097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121110797) 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, 4759572 + ... + 4762117.

It is an arithmetic number, because the mean of its divisors is an integer number (1618687300).

Almost surely, 212121110097 is an apocalyptic number.

It is an amenable number.

12121110097 is a deficient number, since it is larger than the sum of its proper divisors (828388303).

12121110097 is an equidigital number, since it uses as much as digits as its factorization.

12121110097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521775.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 12121110097 in words is "twelve billion, one hundred twenty-one million, one hundred ten thousand, ninety-seven".

Divisors: 1 19 67 1273 9521689 180912091 637953163 12121110097