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12130321210 = 257237534361
BaseRepresentation
bin10110100110000011…
…00000001100111010
31011022101100011102221
423103001200030322
5144320330234320
65323402514254
7606413012650
oct132301401472
934271304387
1012130321210
115165282957
12242650598a
1311b4163577
14831062dd0
154aee143aa
hex2d306033a

12130321210 has 32 divisors (see below), whose sum is σ = 26038755072. Its totient is φ = 3978142080.

The previous prime is 12130321207. The next prime is 12130321211. The reversal of 12130321210 is 1212303121.

It is not an unprimeable number, because it can be changed into a prime (12130321211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3765571 + ... + 3768790.

It is an arithmetic number, because the mean of its divisors is an integer number (813711096).

Almost surely, 212130321210 is an apocalyptic number.

12130321210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12130321210 is an abundant number, since it is smaller than the sum of its proper divisors (13908433862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12130321210 is a wasteful number, since it uses less digits than its factorization.

12130321210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7534398.

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

Adding to 12130321210 its reverse (1212303121), we get a palindrome (13342624331).

The spelling of 12130321210 in words is "twelve billion, one hundred thirty million, three hundred twenty-one thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 23 35 46 70 115 161 230 322 805 1610 7534361 15068722 37671805 52740527 75343610 105481054 173290303 263702635 346580606 527405270 866451515 1213032121 1732903030 2426064242 6065160605 12130321210