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1212210130 = 25121221013
BaseRepresentation
bin100100001000000…
…1101101111010010
310010110222122200111
41020100031233102
54440311211010
6320141511534
742016421215
oct11020155722
93113878614
101212210130
1157229645a
12299b725aa
131641ab001
14b6dcb77c
157164d58a
hex4840dbd2

1212210130 has 8 divisors (see below), whose sum is σ = 2181978252. Its totient is φ = 484884048.

The previous prime is 1212210091. The next prime is 1212210137. The reversal of 1212210130 is 310122121.

It can be written as a sum of positive squares in 2 ways, for example, as 1182190689 + 30019441 = 34383^2 + 5479^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1212210130.

It is not an unprimeable number, because it can be changed into a prime (1212210137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60610497 + ... + 60610516.

Almost surely, 21212210130 is an apocalyptic number.

1212210130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212210130 is a deficient number, since it is larger than the sum of its proper divisors (969768122).

1212210130 is a wasteful number, since it uses less digits than its factorization.

1212210130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121221020.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1212210130 is about 34816.8081535341. The cubic root of 1212210130 is about 1066.2506353912.

Adding to 1212210130 its reverse (310122121), we get a palindrome (1522332251).

The spelling of 1212210130 in words is "one billion, two hundred twelve million, two hundred ten thousand, one hundred thirty".

Divisors: 1 2 5 10 121221013 242442026 606105065 1212210130