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121310313332 = 221317313484917
BaseRepresentation
bin111000011111010101…
…0000111101101110100
3102121010022202102110212
41300332222013231310
53441420420011312
6131421301004552
711523116435615
oct1607652075564
9377108672425
10121310313332
11474a15669aa
121b6166b3758
13b5937c36c0
145c2b38dc0c
153250031822
hex1c3ea87b74

121310313332 has 24 divisors (see below), whose sum is σ = 229944821736. Its totient is φ = 55665733248.

The previous prime is 121310313323. The next prime is 121310313343. The reversal of 121310313332 is 233313013121.

It can be written as a sum of positive squares in 4 ways, for example, as 8472097936 + 112838215396 = 92044^2 + 335914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121310313298 and 121310313307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6733463 + ... + 6751454.

It is an arithmetic number, because the mean of its divisors is an integer number (9581034239).

Almost surely, 2121310313332 is an apocalyptic number.

It is an amenable number.

121310313332 is a deficient number, since it is larger than the sum of its proper divisors (108634508404).

121310313332 is a wasteful number, since it uses less digits than its factorization.

121310313332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13485107 (or 13485105 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 121310313332 its reverse (233313013121), we get a palindrome (354623326453).

The spelling of 121310313332 in words is "one hundred twenty-one billion, three hundred ten million, three hundred thirteen thousand, three hundred thirty-two".

Divisors: 1 2 4 13 26 52 173 346 692 2249 4498 8996 13484917 26969834 53939668 175303921 350607842 701215684 2332890641 4665781282 9331562564 30327578333 60655156666 121310313332