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12103002001 = 257457103049
BaseRepresentation
bin10110100010110010…
…10010011110010001
31011020110221012112101
423101121102132101
5144241332031001
65320545200401
7605631551056
oct132131223621
934213835471
1012103002001
1151509135a2
122419330101
1311ab5b985c
1482b59102d
154ac819a01
hex2d1652791

12103002001 has 8 divisors (see below), whose sum is σ = 12176800200. Its totient is φ = 12029411328.

The previous prime is 12103001951. The next prime is 12103002047. The reversal of 12103002001 is 10020030121.

It can be written as a sum of positive squares in 4 ways, for example, as 6338548225 + 5764453776 = 79615^2 + 75924^2 .

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 12103002001 - 29 = 12103001489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12103002601) 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, 65925 + ... + 168973.

It is an arithmetic number, because the mean of its divisors is an integer number (1522100025).

Almost surely, 212103002001 is an apocalyptic number.

It is an amenable number.

12103002001 is a deficient number, since it is larger than the sum of its proper divisors (73798199).

12103002001 is a wasteful number, since it uses less digits than its factorization.

12103002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103763.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 12103002001 its reverse (10020030121), we get a palindrome (22123032122).

The spelling of 12103002001 in words is "twelve billion, one hundred three million, two thousand, one".

Divisors: 1 257 457 103049 117449 26483593 47093393 12103002001