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13123255032212 = 2213252370289081
BaseRepresentation
bin1011111011110111111011…
…1101000101100110010100
31201110120102012120220112112
42332331332331011212110
53210002411242012322
643524423511410152
72523060331160543
oct276757675054624
951416365526475
1013123255032212
1141aa5a5385786
12157b45b683958
1374269633c040
143352517a015a
1517b5752ab5e2
hexbef7ef45994

13123255032212 has 12 divisors (see below), whose sum is σ = 24732288330036. Its totient is φ = 6056886937920.

The previous prime is 13123255032191. The next prime is 13123255032299. The reversal of 13123255032212 is 21223055232131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8643623520016 + 4479631512196 = 2940004^2 + 2116514^2 .

It is a super-4 number, since 4×131232550322124 (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126185144489 + ... + 126185144592.

It is an arithmetic number, because the mean of its divisors is an integer number (2061024027503).

Almost surely, 213123255032212 is an apocalyptic number.

It is an amenable number.

13123255032212 is a deficient number, since it is larger than the sum of its proper divisors (11609033297824).

13123255032212 is a wasteful number, since it uses less digits than its factorization.

13123255032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252370289098 (or 252370289096 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 13123255032212 in words is "thirteen trillion, one hundred twenty-three billion, two hundred fifty-five million, thirty-two thousand, two hundred twelve".

Divisors: 1 2 4 13 26 52 252370289081 504740578162 1009481156324 3280813758053 6561627516106 13123255032212