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1212103013313 = 3492618201911
BaseRepresentation
bin10001101000110110111…
…110000011001111000001
311021212122112122220000210
4101220312332003033001
5124324341332411223
62324455450104333
7153400020422103
oct21506676031701
94255575586023
101212103013313
11428060608135
12176ab6a1b0a9
138a3baba974a
1442947abd573
15217e2508893
hex11a36f833c1

1212103013313 has 8 divisors (see below), whose sum is σ = 1616170355776. Its totient is φ = 808052173200.

The previous prime is 1212103013281. The next prime is 1212103013321. The reversal of 1212103013313 is 3133103012121.

It is a happy number.

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

It is not a de Polignac number, because 1212103013313 - 25 = 1212103013281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212103013313.

It is not an unprimeable number, because it can be changed into a prime (1212103011313) 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, 3953173 + ... + 4248738.

It is an arithmetic number, because the mean of its divisors is an integer number (202021294472).

Almost surely, 21212103013313 is an apocalyptic number.

It is an amenable number.

1212103013313 is a deficient number, since it is larger than the sum of its proper divisors (404067342463).

1212103013313 is an equidigital number, since it uses as much as digits as its factorization.

1212103013313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251175.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1212103013313 its reverse (3133103012121), we get a palindrome (4345206025434).

The spelling of 1212103013313 in words is "one trillion, two hundred twelve billion, one hundred three million, thirteen thousand, three hundred thirteen".

Divisors: 1 3 49261 147783 8201911 24605733 404034337771 1212103013313