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20012201020205 = 540120394895119
BaseRepresentation
bin1001000110011011101000…
…01000100000101100101101
32121212010222200211112212222
410203031310020200230231
510110334441430121310
6110321251144205125
74133555666002232
oct443156410405455
977763880745788
1020012201020205
116416143839109
1222b25b97697a5
13b221b0c9c014
144d284a845789
1524a86b0b3055
hex123374220b2d

20012201020205 has 16 divisors (see below), whose sum is σ = 24086340057600. Its totient is φ = 15962000774400.

The previous prime is 20012201020183. The next prime is 20012201020211. The reversal of 20012201020205 is 50202010221002.

It is not a de Polignac number, because 20012201020205 - 28 = 20012201019949 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1640636 + ... + 6535754.

It is an arithmetic number, because the mean of its divisors is an integer number (1505396253600).

Almost surely, 220012201020205 is an apocalyptic number.

It is an amenable number.

20012201020205 is a deficient number, since it is larger than the sum of its proper divisors (4074139037395).

20012201020205 is a wasteful number, since it uses less digits than its factorization.

20012201020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897564.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 20012201020205 its reverse (50202010221002), we get a palindrome (70214211241207).

The spelling of 20012201020205 in words is "twenty trillion, twelve billion, two hundred one million, twenty thousand, two hundred five".

Divisors: 1 5 401 2005 2039 10195 817639 4088195 4895119 24475595 1962942719 9814713595 9981147641 49905738205 4002440204041 20012201020205