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12231121201 = 135979972081
BaseRepresentation
bin10110110010000100…
…00001100100110001
31011120102000100000221
423121002001210301
5200022131334301
65341403213041
7612045546325
oct133102014461
934512010027
1012231121201
115207170432
122454217181
1311cbcc7230
148405c1985
154b8bc5da1
hex2d9081931

12231121201 has 32 divisors (see below), whose sum is σ = 13711219200. Its totient is φ = 10840227840.

The previous prime is 12231121193. The next prime is 12231121247. The reversal of 12231121201 is 10212113221.

It is not a de Polignac number, because 12231121201 - 23 = 12231121193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231121261) 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 31 ways as a sum of consecutive naturals, for example, 5876481 + ... + 5878561.

It is an arithmetic number, because the mean of its divisors is an integer number (428475600).

Almost surely, 212231121201 is an apocalyptic number.

It is an amenable number.

12231121201 is a deficient number, since it is larger than the sum of its proper divisors (1480097999).

12231121201 is a wasteful number, since it uses less digits than its factorization.

12231121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12231121201 its reverse (10212113221), we get a palindrome (22443234422).

The spelling of 12231121201 in words is "twelve billion, two hundred thirty-one million, one hundred twenty-one thousand, two hundred one".

Divisors: 1 13 59 79 97 767 1027 1261 2081 4661 5723 7663 27053 60593 74399 99619 122779 164399 201857 452117 1596127 2137187 2624141 5877521 9699541 11909563 15946703 126094033 154824319 207307139 940855477 12231121201