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21210200009959 is a prime number
BaseRepresentation
bin1001101001010011000100…
…11011111110110011100111
32210002200020022021210211211
410310221202123332303213
510240001442200304314
6113035455324212251
74316246346255202
oct464514233766347
983080208253754
1021210200009959
116838216a58624
12246681909a087
13bab161b4789c
145348172d0939
hex134a626fece7

21210200009959 has 2 divisors, whose sum is σ = 21210200009960. Its totient is φ = 21210200009958.

The previous prime is 21210200009851. The next prime is 21210200010011. The reversal of 21210200009959 is 95990000201212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21210200009959 - 29 = 21210200009447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210200009059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605100004979 + 10605100004980.

It is an arithmetic number, because the mean of its divisors is an integer number (10605100004980).

Almost surely, 221210200009959 is an apocalyptic number.

21210200009959 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210200009959 is an equidigital number, since it uses as much as digits as its factorization.

21210200009959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 21210200009959 in words is "twenty-one trillion, two hundred ten billion, two hundred million, nine thousand, nine hundred fifty-nine".