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12101001010101 = 329713861398637
BaseRepresentation
bin1011000000010111101111…
…0111011101101110110101
31120211211210120022000202100
42300011323313131232311
53041230322224310401
641423042332132313
72356161041306553
oct260057367355665
946754716260670
1012101001010101
113946007663683
121435308907099
1369a1727011a3
142db997970bd3
1515eb94e8ab86
hexb017bdddbb5

12101001010101 has 12 divisors (see below), whose sum is σ = 17659421864812. Its totient is φ = 7984165614336.

The previous prime is 12101001010099. The next prime is 12101001010157. The reversal of 12101001010101 is 10101010010121.

It can be written as a sum of positive squares in 2 ways, for example, as 1733438193201 + 10367562816900 = 1316601^2 + 3219870^2 .

It is not a de Polignac number, because 12101001010101 - 21 = 12101001010099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

12101001010101 is a modest number, since divided by 1010101 gives 121010 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101001015101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6930698446 + ... + 6930700191.

Almost surely, 212101001010101 is an apocalyptic number.

It is an amenable number.

12101001010101 is a deficient number, since it is larger than the sum of its proper divisors (5558420854711).

12101001010101 is a wasteful number, since it uses less digits than its factorization.

12101001010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861398740 (or 13861398737 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 12101001010101 its reverse (10101010010121), we get a palindrome (22202011020222).

The spelling of 12101001010101 in words is "twelve trillion, one hundred one billion, one million, ten thousand, one hundred one".

Divisors: 1 3 9 97 291 873 13861398637 41584195911 124752587733 1344555667789 4033667003367 12101001010101