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1222000210 = 25122200021
BaseRepresentation
bin100100011010110…
…0011111001010010
310011011102001011001
41020311203321102
510000313001320
6321131412214
742165554554
oct11065437122
93134361131
101222000210
11577872932
122a12b406a
13166228162
14b84194d4
157243420a
hex48d63e52

1222000210 has 8 divisors (see below), whose sum is σ = 2199600396. Its totient is φ = 488800080.

The previous prime is 1222000201. The next prime is 1222000211. The reversal of 1222000210 is 120002221.

It can be written as a sum of positive squares in 2 ways, for example, as 1211944969 + 10055241 = 34813^2 + 3171^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 122200021 = 1222000210 / (1 + 2 + 2 + 2 + 0 + 0 + 0 + 2 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (1222000211) 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, 61100001 + ... + 61100020.

Almost surely, 21222000210 is an apocalyptic number.

1222000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222000210 is a deficient number, since it is larger than the sum of its proper divisors (977600186).

1222000210 is a wasteful number, since it uses less digits than its factorization.

1222000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122200028.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1222000210 is about 34957.1195895772. The cubic root of 1222000210 is about 1069.1133686399.

Adding to 1222000210 its reverse (120002221), we get a palindrome (1342002431).

The spelling of 1222000210 in words is "one billion, two hundred twenty-two million, two hundred ten", and thus it is an aban number.

Divisors: 1 2 5 10 122200021 244400042 611000105 1222000210