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10102012123 = 71877768857
BaseRepresentation
bin10010110100010000…
…00111100011011011
3222002000201101110011
421122020013203123
5131142103341443
64350225102351
7505223454250
oct113210074333
928060641404
1010102012123
114314360255
121b5b1879b7
13c4cb86a88
146bb919427
153e1d0db9d
hex25a2078db

10102012123 has 8 divisors (see below), whose sum is σ = 11551322592. Its totient is φ = 8654243136.

The previous prime is 10102012121. The next prime is 10102012127. The reversal of 10102012123 is 32121020101.

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

It is not a de Polignac number, because 10102012123 - 21 = 10102012121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10102012121) 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, 371290 + ... + 397567.

It is an arithmetic number, because the mean of its divisors is an integer number (1443915324).

Almost surely, 210102012123 is an apocalyptic number.

10102012123 is a deficient number, since it is larger than the sum of its proper divisors (1449310469).

10102012123 is an equidigital number, since it uses as much as digits as its factorization.

10102012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770741.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10102012123 its reverse (32121020101), we get a palindrome (42223032224).

The spelling of 10102012123 in words is "ten billion, one hundred two million, twelve thousand, one hundred twenty-three".

Divisors: 1 7 1877 13139 768857 5381999 1443144589 10102012123