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1210200201 = 327149128923
BaseRepresentation
bin100100000100010…
…0011000010001001
310010100012112120200
41020020203002021
54434302401301
6320030442413
741663350320
oct11010430211
93110175520
101210200201
11571143361
12299363409
131639561c2
14b6a270b7
15713a2c86
hex48223089

1210200201 has 24 divisors (see below), whose sum is σ = 2011214400. Its totient is φ = 686896416.

The previous prime is 1210200169. The next prime is 1210200203. The reversal of 1210200201 is 1020020121.

It is not a de Polignac number, because 1210200201 - 25 = 1210200169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1210200203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55075 + ... + 73848.

It is an arithmetic number, because the mean of its divisors is an integer number (83800600).

Almost surely, 21210200201 is an apocalyptic number.

It is an amenable number.

1210200201 is a deficient number, since it is larger than the sum of its proper divisors (801014199).

1210200201 is a wasteful number, since it uses less digits than its factorization.

1210200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129085 (or 129082 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1210200201 is about 34787.9318298746. The cubic root of 1210200201 is about 1065.6610033971.

Adding to 1210200201 its reverse (1020020121), we get a palindrome (2230220322).

The spelling of 1210200201 in words is "one billion, two hundred ten million, two hundred thousand, two hundred one".

Divisors: 1 3 7 9 21 63 149 447 1043 1341 3129 9387 128923 386769 902461 1160307 2707383 8122149 19209527 57628581 134466689 172885743 403400067 1210200201