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10102012103 = 66115282923
BaseRepresentation
bin10010110100010000…
…00111100011000111
3222002000201101102102
421122020013203013
5131142103341403
64350225102315
7505223454221
oct113210074307
928060641372
1010102012103
114314360237
121b5b18799b
13c4cb86a71
146bb919411
153e1d0db88
hex25a2078c7

10102012103 has 4 divisors (see below), whose sum is σ = 10117295688. Its totient is φ = 10086728520.

The previous prime is 10102012097. The next prime is 10102012121. The reversal of 10102012103 is 30121020101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30121020101 = 271311102477.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10102012103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102014103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7640801 + ... + 7642122.

It is an arithmetic number, because the mean of its divisors is an integer number (2529323922).

Almost surely, 210102012103 is an apocalyptic number.

10102012103 is a deficient number, since it is larger than the sum of its proper divisors (15283585).

10102012103 is an equidigital number, since it uses as much as digits as its factorization.

10102012103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15283584.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10102012103 its reverse (30121020101), we get a palindrome (40223032204).

The spelling of 10102012103 in words is "ten billion, one hundred two million, twelve thousand, one hundred three".

Divisors: 1 661 15282923 10102012103