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13112132112121 = 723463175900247
BaseRepresentation
bin1011111011001110011111…
…1110100000111011111001
31201102111201000212000122011
42332303213332200323321
53204312121310041441
643515344052525521
72522214600002230
oct276634776407371
951374630760564
1013112132112121
1141a5907821239
1215792766208a1
13741612b07613
143348b8453b17
1517b123a3b581
hexbece7fa0ef9

13112132112121 has 16 divisors (see below), whose sum is σ = 15670601293824. Its totient is φ = 10727100602064.

The previous prime is 13112132112089. The next prime is 13112132112137. The reversal of 13112132112121 is 12121123121131.

It is not a de Polignac number, because 13112132112121 - 25 = 13112132112089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13112132112092 and 13112132112101.

It is not an unprimeable number, because it can be changed into a prime (13112132112421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87875581 + ... + 88024666.

It is an arithmetic number, because the mean of its divisors is an integer number (979412580864).

Almost surely, 213112132112121 is an apocalyptic number.

It is an amenable number.

13112132112121 is a deficient number, since it is larger than the sum of its proper divisors (2558469181703).

13112132112121 is a wasteful number, since it uses less digits than its factorization.

13112132112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175900740.

The product of its digits is 144, while the sum is 22.

Adding to 13112132112121 its reverse (12121123121131), we get a palindrome (25233255233252).

The spelling of 13112132112121 in words is "thirteen trillion, one hundred twelve billion, one hundred thirty-two million, one hundred twelve thousand, one hundred twenty-one".

Divisors: 1 7 23 161 463 3241 10649 74543 175900247 1231301729 4045705681 28319939767 81441814361 570092700527 1873161730303 13112132112121