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12111120201 = 3193779157463
BaseRepresentation
bin10110100011110000…
…10000011101001001
31011021001012122121110
423101320100131021
5144300421321301
65321435200533
7606060552225
oct132170203511
934231178543
1012111120201
115155458954
12241bba6149
1311b019ca1b
1482c6a5785
154ad3c00d6
hex2d1e10749

12111120201 has 64 divisors (see below), whose sum is σ = 17829478400. Its totient is φ = 7285614336.

The previous prime is 12111120193. The next prime is 12111120361. The reversal of 12111120201 is 10202111121.

It is not a de Polignac number, because 12111120201 - 23 = 12111120193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111120001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26157696 + ... + 26158158.

It is an arithmetic number, because the mean of its divisors is an integer number (278585600).

Almost surely, 212111120201 is an apocalyptic number.

It is an amenable number.

12111120201 is a deficient number, since it is larger than the sum of its proper divisors (5718358199).

12111120201 is a wasteful number, since it uses less digits than its factorization.

12111120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12111120201 its reverse (10202111121), we get a palindrome (22313231322).

The spelling of 12111120201 in words is "twelve billion, one hundred eleven million, one hundred twenty thousand, two hundred one".

Divisors: 1 3 19 37 57 79 111 157 237 463 471 703 1389 1501 2109 2923 2983 4503 5809 8769 8797 8949 12403 17131 17427 26391 36577 37209 51393 55537 72691 109731 110371 166611 218073 235657 325489 331113 458911 694963 706971 976467 1353349 1376733 1381129 2084889 2689567 4060047 4143387 5742589 8068701 8719309 17227767 25713631 26157927 51101773 77140893 109109191 153305319 212475793 327327573 637427379 4037040067 12111120201