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13123302230220 = 2235713193713126099
BaseRepresentation
bin1011111011111000000111…
…0001001000100011001100
31201110120112111101211000220
42332332001301020203030
53210003010332331340
643524432315151340
72523061443305220
oct276760161104314
951416474354026
1013123302230220
1141aa619a922a6
12157b473445550
137426a3055c60
14335257b68780
1517b5794d0ed0
hexbef81c488cc

13123302230220 has 768 divisors, whose sum is σ = 49266911232000. Its totient is φ = 2532666839040.

The previous prime is 13123302230197. The next prime is 13123302230281. The reversal of 13123302230220 is 2203220332131.

It is a super-2 number, since 2×131233022302202 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 502814731 + ... + 502840829.

It is an arithmetic number, because the mean of its divisors is an integer number (64149624000).

Almost surely, 213123302230220 is an apocalyptic number.

13123302230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13123302230220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24633455616000).

13123302230220 is an abundant number, since it is smaller than the sum of its proper divisors (36143609001780).

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

13123302230220 is a wasteful number, since it uses less digits than its factorization.

13123302230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26318 (or 26316 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13123302230220 its reverse (2203220332131), we get a palindrome (15326522562351).

The spelling of 13123302230220 in words is "thirteen trillion, one hundred twenty-three billion, three hundred two million, two hundred thirty thousand, two hundred twenty".