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20020212012 = 2231668351001
BaseRepresentation
bin10010101001010011…
…000011000100101100
31220200020120010220210
4102221103003010230
5312000133241022
613110330342420
71306055665023
oct225123030454
956606503823
1020020212012
118543984669
123a6888aa10
131b709336c8
14d7cc678ba
157c290ea0c
hex4a94c312c

20020212012 has 12 divisors (see below), whose sum is σ = 46713828056. Its totient is φ = 6673404000.

The previous prime is 20020212001. The next prime is 20020212053. The reversal of 20020212012 is 21021202002.

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: 1668351001 = 20020212012 / (2 + 0 + 0 + 2 + 0 + 2 + 1 + 2 + 0 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834175489 + ... + 834175512.

Almost surely, 220020212012 is an apocalyptic number.

It is an amenable number.

20020212012 is an abundant number, since it is smaller than the sum of its proper divisors (26693616044).

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

20020212012 is a wasteful number, since it uses less digits than its factorization.

20020212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668351008 (or 1668351006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020212012 its reverse (21021202002), we get a palindrome (41041414014).

The spelling of 20020212012 in words is "twenty billion, twenty million, two hundred twelve thousand, twelve".

Divisors: 1 2 3 4 6 12 1668351001 3336702002 5005053003 6673404004 10010106006 20020212012