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2012000121 = 3374518523
BaseRepresentation
bin111011111101100…
…1010111101111001
312012012221012022000
41313323022331321
513110033000441
6531352051213
7100600501365
oct16773127571
95165835260
102012000121
119427a351a
12481993b09
13260ab9421
141513002a5
15bb9832b6
hex77ecaf79

2012000121 has 8 divisors (see below), whose sum is σ = 2980740960. Its totient is φ = 1341333396.

The previous prime is 2012000113. The next prime is 2012000129. The reversal of 2012000121 is 1210002102.

It is an interprime number because it is at equal distance from previous prime (2012000113) and next prime (2012000129).

It is not a de Polignac number, because 2012000121 - 23 = 2012000113 is a prime.

It is a super-3 number, since 3×20120001213 (a number of 29 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2012000129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37259235 + ... + 37259288.

It is an arithmetic number, because the mean of its divisors is an integer number (372592620).

Almost surely, 22012000121 is an apocalyptic number.

It is an amenable number.

2012000121 is a deficient number, since it is larger than the sum of its proper divisors (968740839).

2012000121 is an equidigital number, since it uses as much as digits as its factorization.

2012000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74518532 (or 74518526 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2012000121 is about 44855.3243327924. The cubic root of 2012000121 is about 1262.4358943498.

Adding to 2012000121 its reverse (1210002102), we get a palindrome (3222002223).

The spelling of 2012000121 in words is "two billion, twelve million, one hundred twenty-one", and thus it is an aban number.

Divisors: 1 3 9 27 74518523 223555569 670666707 2012000121