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12121010233 = 191036193669
BaseRepresentation
bin10110100100111011…
…11111000000111001
31011021201211010011221
423102131333000321
5144310434311413
65322431152041
7606240613153
oct132235770071
934251733157
1012121010233
11515aaa3432
122423375621
1311b2253507
1482db1bad3
154ae1c568d
hex2d277f039

12121010233 has 8 divisors (see below), whose sum is σ = 12882833600. Its totient is φ = 11371574448.

The previous prime is 12121010221. The next prime is 12121010249. The reversal of 12121010233 is 33201012121.

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 12121010233 - 229 = 11584139321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121010203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3094878 + ... + 3098791.

It is an arithmetic number, because the mean of its divisors is an integer number (1610354200).

Almost surely, 212121010233 is an apocalyptic number.

It is an amenable number.

12121010233 is a deficient number, since it is larger than the sum of its proper divisors (761823367).

12121010233 is a wasteful number, since it uses less digits than its factorization.

12121010233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193791.

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

Adding to 12121010233 its reverse (33201012121), we get a palindrome (45322022354).

The spelling of 12121010233 in words is "twelve billion, one hundred twenty-one million, ten thousand, two hundred thirty-three".

Divisors: 1 19 103 1957 6193669 117679711 637947907 12121010233