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12120202201 = 191278575861
BaseRepresentation
bin10110100100110101…
…11001101111011001
31011021200022001202211
423102122321233121
5144310232432301
65322401555121
7606231006322
oct132232715731
934250261684
1012120202201
11515a5a1338
122423045aa1
1311b202c7a3
1482d98b449
154ae0b6051
hex2d26b9bd9

12120202201 has 16 divisors (see below), whose sum is σ = 12875765760. Its totient is φ = 11376650880.

The previous prime is 12120202189. The next prime is 12120202217. The reversal of 12120202201 is 10220202121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12120202201 - 25 = 12120202169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120202271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065011 + ... + 2070871.

It is an arithmetic number, because the mean of its divisors is an integer number (804735360).

Almost surely, 212120202201 is an apocalyptic number.

It is an amenable number.

12120202201 is a deficient number, since it is larger than the sum of its proper divisors (755563559).

12120202201 is a wasteful number, since it uses less digits than its factorization.

12120202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12120202201 its reverse (10220202121), we get a palindrome (22340404322).

The spelling of 12120202201 in words is "twelve billion, one hundred twenty million, two hundred two thousand, two hundred one".

Divisors: 1 19 127 857 2413 5861 16283 108839 111359 744347 2067941 5022877 14142593 95434663 637905379 12120202201