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2112000121 = 71127428573
BaseRepresentation
bin111110111100010…
…1001000001111001
312110012002201111201
41331320221001321
513311133000441
6545323254201
7103223463520
oct17570510171
95405081451
102112000121
11994194a50
124ab37a361
1327872cc1a
141606d14b7
15c5637c31
hex7de29079

2112000121 has 8 divisors (see below), whose sum is σ = 2633143104. Its totient is φ = 1645714320.

The previous prime is 2112000113. The next prime is 2112000179. The reversal of 2112000121 is 1210002112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112000121 - 23 = 2112000113 is a prime.

It is a super-3 number, since 3×21120001213 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112000098 and 2112000107.

It is not an unprimeable number, because it can be changed into a prime (2112001121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13714210 + ... + 13714363.

It is an arithmetic number, because the mean of its divisors is an integer number (329142888).

Almost surely, 22112000121 is an apocalyptic number.

It is an amenable number.

2112000121 is a deficient number, since it is larger than the sum of its proper divisors (521142983).

2112000121 is a wasteful number, since it uses less digits than its factorization.

2112000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27428591.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2112000121 is about 45956.5024887665. The cubic root of 2112000121 is about 1283.0137565003.

Adding to 2112000121 its reverse (1210002112), we get a palindrome (3322002233).

The spelling of 2112000121 in words is "two billion, one hundred twelve million, one hundred twenty-one", and thus it is an aban number.

Divisors: 1 7 11 77 27428573 192000011 301714303 2112000121