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12331113220212 = 2233727772777523
BaseRepresentation
bin1011001101110000111110…
…0111111000100001110100
31121122211202111000110221220
42303130033213320201310
53104013104441021322
642120500223310340
72411615323650603
oct263341747704164
947584674013856
1012331113220212
113a24660a39a36
121471a28a4b3b0
136b5a85412767
14308b86d49a3a
15165b61d0155c
hexb370f9f8874

12331113220212 has 24 divisors (see below), whose sum is σ = 29550235285536. Its totient is φ = 3999279963168.

The previous prime is 12331113220211. The next prime is 12331113220253. The reversal of 12331113220212 is 21202231113321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331113220211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13886388318 + ... + 13886389205.

It is an arithmetic number, because the mean of its divisors is an integer number (1231259803564).

Almost surely, 212331113220212 is an apocalyptic number.

12331113220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12331113220212 is an abundant number, since it is smaller than the sum of its proper divisors (17219122065324).

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

12331113220212 is a wasteful number, since it uses less digits than its factorization.

12331113220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27772777567 (or 27772777565 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 12331113220212 its reverse (21202231113321), we get a palindrome (33533344333533).

The spelling of 12331113220212 in words is "twelve trillion, three hundred thirty-one billion, one hundred thirteen million, two hundred twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 37 74 111 148 222 444 27772777523 55545555046 83318332569 111091110092 166636665138 333273330276 1027592768351 2055185536702 3082778305053 4110371073404 6165556610106 12331113220212