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121000000000001 = 1131070796460177
BaseRepresentation
bin11011100000110010000010…
…000001001001000000000001
3120212102111011001012110102112
4123200302002001021000001
5111324431000000000001
61105202344351225105
734325650541013203
oct3340620201110001
9525374131173375
10121000000000001
11356108a259a101
12116a273b218195
1352693356c54c5
1421c46074b6773
15dec74adbbcbb
hex6e0c82049001

121000000000001 has 4 divisors (see below), whose sum is σ = 122070796460292. Its totient is φ = 119929203539712.

The previous prime is 120999999999941. The next prime is 121000000000007. The reversal of 121000000000001 is 100000000000121.

It is a happy number.

It is a Cunningham number, because it is equal to 110000002+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2132113950976 + 118867886049025 = 1460176^2 + 10902655^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000000000001 - 218 = 120999999737857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120999999999895 and 120999999999904.

It is not an unprimeable number, because it can be changed into a prime (121000000000007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535398229976 + ... + 535398230201.

It is an arithmetic number, because the mean of its divisors is an integer number (30517699115073).

Almost surely, 2121000000000001 is an apocalyptic number.

It is an amenable number.

121000000000001 is a deficient number, since it is larger than the sum of its proper divisors (1070796460291).

121000000000001 is a wasteful number, since it uses less digits than its factorization.

121000000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070796460290.

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 121000000000001 its reverse (100000000000121), we get a palindrome (221000000000122).

The spelling of 121000000000001 in words is "one hundred twenty-one trillion, one", and thus it is an aban number.

Divisors: 1 113 1070796460177 121000000000001