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12120223213 = 77921917221
BaseRepresentation
bin10110100100110101…
…11110110111101101
31011021200100010121001
423102122332313231
5144310234120323
65322402240301
7606231124510
oct132232766755
934250303531
1012120223213
11515a6060aa
122423056091
1311b2039217
1482d994d77
154ae0bc3ad
hex2d26beded

12120223213 has 8 divisors (see below), whose sum is σ = 14027022080. Its totient is φ = 10257258960.

The previous prime is 12120223207. The next prime is 12120223273. The reversal of 12120223213 is 31232202121.

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 12120223213 - 217 = 12120092141 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 (12120223273) 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, 10958058 + ... + 10959163.

It is an arithmetic number, because the mean of its divisors is an integer number (1753377760).

Almost surely, 212120223213 is an apocalyptic number.

It is an amenable number.

12120223213 is a deficient number, since it is larger than the sum of its proper divisors (1906798867).

12120223213 is an equidigital number, since it uses as much as digits as its factorization.

12120223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21917307.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12120223213 its reverse (31232202121), we get a palindrome (43352425334).

The spelling of 12120223213 in words is "twelve billion, one hundred twenty million, two hundred twenty-three thousand, two hundred thirteen".

Divisors: 1 7 79 553 21917221 153420547 1731460459 12120223213