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20220000012 = 22324113699187
BaseRepresentation
bin10010110101001101…
…001011011100001100
31221012011111102112100
4102311031023130030
5312402310000022
613142224435100
71314033110232
oct226515133414
957164442470
1020220000012
118636732313
123b03778a90
131ba3145364
14d9b5d2952
157d52261ac
hex4b534b70c

20220000012 has 36 divisors (see below), whose sum is σ = 52358296536. Its totient is φ = 6575609280.

The previous prime is 20219999999. The next prime is 20220000079. The reversal of 20220000012 is 21000002202.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 20219999949 and 20220000003.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6848118 + ... + 6851069.

It is an arithmetic number, because the mean of its divisors is an integer number (1454397126).

Almost surely, 220220000012 is an apocalyptic number.

It is an amenable number.

20220000012 is an abundant number, since it is smaller than the sum of its proper divisors (32138296524).

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

20220000012 is a wasteful number, since it uses less digits than its factorization.

20220000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13699238 (or 13699233 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20220000012 its reverse (21000002202), we get a palindrome (41220002214).

The spelling of 20220000012 in words is "twenty billion, two hundred twenty million, twelve", and thus it is an aban number.

Divisors: 1 2 3 4 6 9 12 18 36 41 82 123 164 246 369 492 738 1476 13699187 27398374 41097561 54796748 82195122 123292683 164390244 246585366 493170732 561666667 1123333334 1685000001 2246666668 3370000002 5055000003 6740000004 10110000006 20220000012