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121886860471 is a prime number
BaseRepresentation
bin111000110000100000…
…1011110010010110111
3102122121111122001110121
41301201001132102313
53444111014013341
6131554414232411
711543320135225
oct1614101362267
9378544561417
10121886860471
1147767a56342
121b7577b5707
13b65609a35c
145c83b8db15
15328596a4d1
hex1c6105e4b7

121886860471 has 2 divisors, whose sum is σ = 121886860472. Its totient is φ = 121886860470.

The previous prime is 121886860439. The next prime is 121886860519. The reversal of 121886860471 is 174068688121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121886860471 - 25 = 121886860439 is a prime.

It is a super-3 number, since 3×1218868604713 (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121886860411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60943430235 + 60943430236.

It is an arithmetic number, because the mean of its divisors is an integer number (60943430236).

Almost surely, 2121886860471 is an apocalyptic number.

121886860471 is a deficient number, since it is larger than the sum of its proper divisors (1).

121886860471 is an equidigital number, since it uses as much as digits as its factorization.

121886860471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 121886860471 in words is "one hundred twenty-one billion, eight hundred eighty-six million, eight hundred sixty thousand, four hundred seventy-one".