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21130130001 = 317939348473
BaseRepresentation
bin10011101011011101…
…000011001001010001
32000112121001211011110
4103223131003021101
5321233303130001
613412420003533
71345424066361
oct235335031121
960477054143
1021130130001
118a63453462
1241185305a9
131cb9877806
1410464289a1
1583a0a43d6
hex4eb743251

21130130001 has 8 divisors (see below), whose sum is σ = 28330901280. Its totient is φ = 14008056032.

The previous prime is 21130129973. The next prime is 21130130009. The reversal of 21130130001 is 10003103112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-21130130001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21130130009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19673700 + ... + 19674773.

It is an arithmetic number, because the mean of its divisors is an integer number (3541362660).

Almost surely, 221130130001 is an apocalyptic number.

It is an amenable number.

21130130001 is a deficient number, since it is larger than the sum of its proper divisors (7200771279).

21130130001 is a wasteful number, since it uses less digits than its factorization.

21130130001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39348655.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21130130001 its reverse (10003103112), we get a palindrome (31133233113).

The spelling of 21130130001 in words is "twenty-one billion, one hundred thirty million, one hundred thirty thousand, one".

Divisors: 1 3 179 537 39348473 118045419 7043376667 21130130001