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12011201201 = 108739110459
BaseRepresentation
bin10110010111110110…
…00110001010110001
31011000002012020111202
423023323012022301
5144044331414301
65303505420545
7603435345206
oct131373061261
934002166452
1012011201201
11510401226a
1223b263a755
13119558705c
154a473466b
hex2cbec62b1

12011201201 has 4 divisors (see below), whose sum is σ = 12011420400. Its totient is φ = 12010982004.

The previous prime is 12011201173. The next prime is 12011201221. The reversal of 12011201201 is 10210211021.

Adding to 12011201201 its reverse (10210211021), we get a palindrome (22221412222).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10210211021 = 41389246689.

It is a cyclic number.

It is not a de Polignac number, because 12011201201 - 210 = 12011200177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011201221) 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, 53510 + ... + 163968.

It is an arithmetic number, because the mean of its divisors is an integer number (3002855100).

Almost surely, 212011201201 is an apocalyptic number.

It is an amenable number.

12011201201 is a deficient number, since it is larger than the sum of its proper divisors (219199).

12011201201 is a wasteful number, since it uses less digits than its factorization.

12011201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219198.

The product of its (nonzero) digits is 8, while the sum is 11.

The spelling of 12011201201 in words is "twelve billion, eleven million, two hundred one thousand, two hundred one".

Divisors: 1 108739 110459 12011201201