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10102001209 = 31197733247
BaseRepresentation
bin10010110100010000…
…00100111000111001
3222002000200211110221
421122020010320321
5131142103014314
64350224540041
7505223410366
oct113210047071
928060624427
1010102001209
114314353033
121b5b181621
13c4cb81b11
146bb91546d
153e1d0a824
hex25a204e39

10102001209 has 8 divisors (see below), whose sum is σ = 10145161728. Its totient is φ = 10058909760.

The previous prime is 10102001191. The next prime is 10102001227. The reversal of 10102001209 is 90210020101.

It is an interprime number because it is at equal distance from previous prime (10102001191) and next prime (10102001227).

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

It is a cyclic number.

It is not a de Polignac number, because 10102001209 - 211 = 10101999161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102001192 and 10102001201.

It is not an unprimeable number, because it can be changed into a prime (10102101209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287224 + ... + 320470.

It is an arithmetic number, because the mean of its divisors is an integer number (1268145216).

Almost surely, 210102001209 is an apocalyptic number.

It is an amenable number.

10102001209 is a deficient number, since it is larger than the sum of its proper divisors (43160519).

10102001209 is an equidigital number, since it uses as much as digits as its factorization.

10102001209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34535.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 10102001209 in words is "ten billion, one hundred two million, one thousand, two hundred nine".

Divisors: 1 311 977 33247 303847 10339817 32482319 10102001209