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1213102230113 = 7117085946903
BaseRepresentation
bin10001101001110010100…
…001110000101001100001
311021222020011212100210102
4101221302201300221201
5124333413132330423
62325142542512145
7153433542551444
oct21516241605141
94258204770712
101213102230113
11428523646544
12177135595655
138a519c012a7
1442a006a565b
15218500d2c28
hex11a72870a61

1213102230113 has 4 divisors (see below), whose sum is σ = 1230188177088. Its totient is φ = 1196016283140.

The previous prime is 1213102230097. The next prime is 1213102230133. The reversal of 1213102230113 is 3110322013121.

It is a happy number.

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 1213102230113 - 24 = 1213102230097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213102230133) 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 3 ways as a sum of consecutive naturals, for example, 8542973381 + ... + 8542973522.

It is an arithmetic number, because the mean of its divisors is an integer number (307547044272).

Almost surely, 21213102230113 is an apocalyptic number.

It is an amenable number.

1213102230113 is a deficient number, since it is larger than the sum of its proper divisors (17085946975).

1213102230113 is an equidigital number, since it uses as much as digits as its factorization.

1213102230113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17085946974.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1213102230113 its reverse (3110322013121), we get a palindrome (4323424243234).

The spelling of 1213102230113 in words is "one trillion, two hundred thirteen billion, one hundred two million, two hundred thirty thousand, one hundred thirteen".

Divisors: 1 71 17085946903 1213102230113