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1301210012 = 221019319237
BaseRepresentation
bin100110110001110…
…1110001110011100
310100200110022120102
41031203232032130
510131102210022
6333041240232
744150050124
oct11543561634
93320408512
101301210012
11608554383
12303933078
1317976c96b
14c4b57c84
157937da92
hex4d8ee39c

1301210012 has 12 divisors (see below), whose sum is σ = 2279359320. Its totient is φ = 649964496.

The previous prime is 1301210011. The next prime is 1301210047. The reversal of 1301210012 is 2100121031.

It is a junction number, because it is equal to n+sod(n) for n = 1301209975 and 1301210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301210011) 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, 155543 + ... + 163694.

It is an arithmetic number, because the mean of its divisors is an integer number (189946610).

Almost surely, 21301210012 is an apocalyptic number.

It is an amenable number.

1301210012 is a deficient number, since it is larger than the sum of its proper divisors (978149308).

1301210012 is a wasteful number, since it uses less digits than its factorization.

1301210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320260 (or 320258 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1301210012 is about 36072.2886992217. The cubic root of 1301210012 is about 1091.7313930531.

Adding to 1301210012 its reverse (2100121031), we get a palindrome (3401331043).

The spelling of 1301210012 in words is "one billion, three hundred one million, two hundred ten thousand, twelve".

Divisors: 1 2 4 1019 2038 4076 319237 638474 1276948 325302503 650605006 1301210012