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21210200010001 = 672631303392357
BaseRepresentation
bin1001101001010011000100…
…11011111110110100010001
32210002200020022021210220101
410310221202123332310101
510240001442200310001
6113035455324212401
74316246346255262
oct464514233766421
983080208253811
1021210200010001
116838216a58662
12246681909a101
13bab161b47902
145348172d0969
1526bad528ba01
hex134a626fed11

21210200010001 has 16 divisors (see below), whose sum is σ = 21610512975744. Its totient is φ = 20812364014464.

The previous prime is 21210200009959. The next prime is 21210200010011. The reversal of 21210200010001 is 10001000201212.

Adding to 21210200010001 its reverse (10001000201212), we get a palindrome (31211200211213).

It is a cyclic number.

It is not a de Polignac number, because 21210200010001 - 215 = 21210199977233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21210200010001.

It is not an unprimeable number, because it can be changed into a prime (21210200010011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229608315 + ... + 229700671.

It is an arithmetic number, because the mean of its divisors is an integer number (1350657060984).

Almost surely, 221210200010001 is an apocalyptic number.

It is an amenable number.

21210200010001 is a deficient number, since it is larger than the sum of its proper divisors (400312965743).

21210200010001 is a wasteful number, since it uses less digits than its factorization.

21210200010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105720.

The product of its (nonzero) digits is 8, while the sum is 10.

The spelling of 21210200010001 in words is "twenty-one trillion, two hundred ten billion, two hundred million, ten thousand, one".

Divisors: 1 67 263 13033 17621 92357 873211 3427679 6187919 24289891 229654493 1203688781 1627422697 80647148327 316570149403 21210200010001