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213120000001 = 792697721519
BaseRepresentation
bin1100011001111011110…
…0010010000000000001
3202101002200212202000101
43012132330102000001
511442432210000001
6241523405122401
721253212052606
oct3063674220001
9671080782011
10213120000001
1182424758407
1235379559401
1317135517a9c
14a45a7666ad
1558251cba01
hex319ef12001

213120000001 has 4 divisors (see below), whose sum is σ = 215817721600. Its totient is φ = 210422278404.

The previous prime is 213119999947. The next prime is 213120000019. The reversal of 213120000001 is 100000021312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213120000001 - 29 = 213119999489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213120001001) 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, 1348860681 + ... + 1348860838.

It is an arithmetic number, because the mean of its divisors is an integer number (53954430400).

Almost surely, 2213120000001 is an apocalyptic number.

It is an amenable number.

213120000001 is a deficient number, since it is larger than the sum of its proper divisors (2697721599).

213120000001 is an equidigital number, since it uses as much as digits as its factorization.

213120000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697721598.

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

Adding to 213120000001 its reverse (100000021312), we get a palindrome (313120021313).

The spelling of 213120000001 in words is "two hundred thirteen billion, one hundred twenty million, one", and thus it is an aban number.

Divisors: 1 79 2697721519 213120000001