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20000012201 = 137731990249
BaseRepresentation
bin10010101000000101…
…111111011110101001
31220121211112212222122
4102220011333132221
5311430000342301
613104325401025
71305422204321
oct225005773651
956554485878
1020000012201
118533538204
123a61b69175
131b696b0360
14d7a2ca281
157c0c6e81b
hex4a817f7a9

20000012201 has 8 divisors (see below), whose sum is σ = 21566349000. Its totient is φ = 18437657472.

The previous prime is 20000012191. The next prime is 20000012203. The reversal of 20000012201 is 10221000002.

It can be written as a sum of positive squares in 4 ways, for example, as 266505625 + 19733506576 = 16325^2 + 140476^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20000012201 - 214 = 19999995817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000012203) 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 7 ways as a sum of consecutive naturals, for example, 985076 + ... + 1005173.

It is an arithmetic number, because the mean of its divisors is an integer number (2695793625).

Almost surely, 220000012201 is an apocalyptic number.

It is an amenable number.

20000012201 is a deficient number, since it is larger than the sum of its proper divisors (1566336799).

20000012201 is a wasteful number, since it uses less digits than its factorization.

20000012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991035.

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

Adding to 20000012201 its reverse (10221000002), we get a palindrome (30221012203).

The spelling of 20000012201 in words is "twenty billion, twelve thousand, two hundred one".

Divisors: 1 13 773 10049 1990249 25873237 1538462477 20000012201