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10521601021 is a prime number
BaseRepresentation
bin10011100110010001…
…01110001111111101
31000011021020201012201
421303020232033331
5133022012213041
64500014231501
7521510063431
oct116310561775
930137221181
1010521601021
11450a195638
1220577b5591
13cb8a96629
1471b53c9c1
15418a91631
hex27322e3fd

10521601021 has 2 divisors, whose sum is σ = 10521601022. Its totient is φ = 10521601020.

The previous prime is 10521601009. The next prime is 10521601037. The reversal of 10521601021 is 12010612501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9951060025 + 570540996 = 99755^2 + 23886^2 .

It is an emirp because it is prime and its reverse (12010612501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10521601021 - 27 = 10521600893 is a prime.

It is a super-3 number, since 3×105216010213 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 10521601021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10521604021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260800510 + 5260800511.

It is an arithmetic number, because the mean of its divisors is an integer number (5260800511).

Almost surely, 210521601021 is an apocalyptic number.

It is an amenable number.

10521601021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10521601021 is an equidigital number, since it uses as much as digits as its factorization.

10521601021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The spelling of 10521601021 in words is "ten billion, five hundred twenty-one million, six hundred one thousand, twenty-one".