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1312203200212 = 221493219725921
BaseRepresentation
bin10011000110000101011…
…001111101011011010100
311122110000200211020212101
4103012011121331123110
5132444343004401322
62442452352331444
7163542422111512
oct23060531753324
94573020736771
101312203200212
11466558552123
12192392243b84
1396981396a78
144772217d4b2
1524200433327
hex1318567d6d4

1312203200212 has 12 divisors (see below), whose sum is σ = 2297893692276. Its totient is φ = 655662145280.

The previous prime is 1312203200183. The next prime is 1312203200233. The reversal of 1312203200212 is 2120023022131.

It can be written as a sum of positive squares in 2 ways, for example, as 1193678613136 + 118524587076 = 1092556^2 + 344274^2 .

It is a super-2 number, since 2×13122032002122 (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1312203200212.

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, 109856989 + ... + 109868932.

It is an arithmetic number, because the mean of its divisors is an integer number (191491141023).

Almost surely, 21312203200212 is an apocalyptic number.

It is an amenable number.

1312203200212 is a deficient number, since it is larger than the sum of its proper divisors (985690492064).

1312203200212 is a wasteful number, since it uses less digits than its factorization.

1312203200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219727418 (or 219727416 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1312203200212 its reverse (2120023022131), we get a palindrome (3432226222343).

The spelling of 1312203200212 in words is "one trillion, three hundred twelve billion, two hundred three million, two hundred thousand, two hundred twelve".

Divisors: 1 2 4 1493 2986 5972 219725921 439451842 878903684 328050800053 656101600106 1312203200212