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1200202213 = 7171457459
BaseRepresentation
bin100011110001001…
…1010000111100101
310002122101120220211
41013202122013211
54424222432323
6315032255421
741512356550
oct10742320745
93078346824
101200202213
11566534761
12295b41571
13161865532
14b5583697
157057a70d
hex4789a1e5

1200202213 has 4 divisors (see below), whose sum is σ = 1371659680. Its totient is φ = 1028744748.

The previous prime is 1200202177. The next prime is 1200202217. The reversal of 1200202213 is 3122020021.

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 1200202213 - 221 = 1198105061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200202193 and 1200202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200202217) 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, 85728723 + ... + 85728736.

It is an arithmetic number, because the mean of its divisors is an integer number (342914920).

Almost surely, 21200202213 is an apocalyptic number.

It is an amenable number.

1200202213 is a deficient number, since it is larger than the sum of its proper divisors (171457467).

1200202213 is an equidigital number, since it uses as much as digits as its factorization.

1200202213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171457466.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1200202213 is about 34643.9347216796. The cubic root of 1200202213 is about 1062.7182556571.

Adding to 1200202213 its reverse (3122020021), we get a palindrome (4322222234).

The spelling of 1200202213 in words is "one billion, two hundred million, two hundred two thousand, two hundred thirteen".

Divisors: 1 7 171457459 1200202213