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12120223201 = 62871927823
BaseRepresentation
bin10110100100110101…
…11110110111100001
31011021200100010120121
423102122332313201
5144310234120301
65322402240241
7606231124462
oct132232766741
934250303517
1012120223201
11515a606099
122423056081
1311b2039208
1482d994d69
154ae0bc3a1
hex2d26bede1

12120223201 has 4 divisors (see below), whose sum is σ = 12122157312. Its totient is φ = 12118289092.

The previous prime is 12120223153. The next prime is 12120223207. The reversal of 12120223201 is 10232202121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10232202121 = 17359145677.

It is a cyclic number.

It is not a de Polignac number, because 12120223201 - 29 = 12120222689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120223207) 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, 957625 + ... + 970198.

It is an arithmetic number, because the mean of its divisors is an integer number (3030539328).

Almost surely, 212120223201 is an apocalyptic number.

It is an amenable number.

12120223201 is a deficient number, since it is larger than the sum of its proper divisors (1934111).

12120223201 is an equidigital number, since it uses as much as digits as its factorization.

12120223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934110.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12120223201 its reverse (10232202121), we get a palindrome (22352425322).

The spelling of 12120223201 in words is "twelve billion, one hundred twenty million, two hundred twenty-three thousand, two hundred one".

Divisors: 1 6287 1927823 12120223201