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1212012012 = 223101001001
BaseRepresentation
bin100100000111101…
…1101010111101100
310010110121120220210
41020033131113230
54440233341022
6320133342420
742014634501
oct11017352754
93113546823
101212012012
11572170622
12299a97a10
1316413ba93
14b6d794a8
157160ea0c
hex483dd5ec

1212012012 has 12 divisors (see below), whose sum is σ = 2828028056. Its totient is φ = 404004000.

The previous prime is 1212012007. The next prime is 1212012013. The reversal of 1212012012 is 2102102121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 101001001 = 1212012012 / (1 + 2 + 1 + 2 + 0 + 1 + 2 + 0 + 1 + 2).

1212012012 is a modest number, since divided by 12012 gives 1212 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1212012013) 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 3 ways as a sum of consecutive naturals, for example, 50500489 + ... + 50500512.

Almost surely, 21212012012 is an apocalyptic number.

1212012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212012012 is an abundant number, since it is smaller than the sum of its proper divisors (1616016044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212012012 is a wasteful number, since it uses less digits than its factorization.

1212012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101001008 (or 101001006 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1212012012 is about 34813.9628884734. The cubic root of 1212012012 is about 1066.1925445407.

Adding to 1212012012 its reverse (2102102121), we get a palindrome (3314114133).

The spelling of 1212012012 in words is "one billion, two hundred twelve million, twelve thousand, twelve".

Divisors: 1 2 3 4 6 12 101001001 202002002 303003003 404004004 606006006 1212012012