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20210212012 = 227211700673
BaseRepresentation
bin10010110100100111…
…110101110010101100
31221011111002010220211
4102310213311302230
5312342303241022
613141234552204
71313553652624
oct226447656254
957144063824
1020210212012
118631157461
123b00438664
131ba10c9143
14d9a1a5884
157d4440e77
hex4b49f5cac

20210212012 has 12 divisors (see below), whose sum is σ = 35372826216. Its totient is φ = 10103690240.

The previous prime is 20210212007. The next prime is 20210212019. The reversal of 20210212012 is 21021201202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20210211983 and 20210212001.

It is not an unprimeable number, because it can be changed into a prime (20210212019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321493 + ... + 379180.

It is an arithmetic number, because the mean of its divisors is an integer number (2947735518).

Almost surely, 220210212012 is an apocalyptic number.

It is an amenable number.

20210212012 is a deficient number, since it is larger than the sum of its proper divisors (15162614204).

20210212012 is a wasteful number, since it uses less digits than its factorization.

20210212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707888 (or 707886 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20210212012 its reverse (21021201202), we get a palindrome (41231413214).

The spelling of 20210212012 in words is "twenty billion, two hundred ten million, two hundred twelve thousand, twelve".

Divisors: 1 2 4 7211 14422 28844 700673 1401346 2802692 5052553003 10105106006 20210212012