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12300312222 = 23211197931391
BaseRepresentation
bin10110111010010011…
…11101111010011110
31011202020012121021100
423131021331322132
5200142334442342
65352314213530
7613545633402
oct133511757236
934666177240
1012300312222
1152422296a0
1224734242a6
131210441773
14849873102
154bece1e4c
hex2dd27de9e

12300312222 has 48 divisors (see below), whose sum is σ = 29089082880. Its totient is φ = 3725365200.

The previous prime is 12300312191. The next prime is 12300312229. The reversal of 12300312222 is 22221300321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12300312195 and 12300312204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12300312229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376147 + ... + 407537.

It is an arithmetic number, because the mean of its divisors is an integer number (606022560).

Almost surely, 212300312222 is an apocalyptic number.

12300312222 is an abundant number, since it is smaller than the sum of its proper divisors (16788770658).

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

12300312222 is a wasteful number, since it uses less digits than its factorization.

12300312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33389 (or 33386 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12300312222 its reverse (22221300321), we get a palindrome (34521612543).

The spelling of 12300312222 in words is "twelve billion, three hundred million, three hundred twelve thousand, two hundred twenty-two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 1979 3958 5937 11874 17811 21769 31391 35622 43538 62782 65307 94173 130614 188346 195921 282519 345301 391842 565038 690602 1035903 2071806 3107709 6215418 62122789 124245578 186368367 372736734 559105101 683350679 1118210202 1366701358 2050052037 4100104074 6150156111 12300312222