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12012011110 = 2511127785513
BaseRepresentation
bin10110010111111100…
…01011111001100110
31011000010201101111101
423023332023321212
5144100033323420
65303535030314
7603445260361
oct131376137146
934003641441
1012012011110
115104515810
1223b296b39a
1311957ab8a8
1481d4670d8
154a484460a
hex2cbf8be66

12012011110 has 32 divisors (see below), whose sum is σ = 23605968672. Its totient is φ = 4364532480.

The previous prime is 12012011069. The next prime is 12012011111. The reversal of 12012011110 is 1111021021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012011111) 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, 97714 + ... + 183226.

It is an arithmetic number, because the mean of its divisors is an integer number (737686521).

Almost surely, 212012011110 is an apocalyptic number.

12012011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012011110 is a deficient number, since it is larger than the sum of its proper divisors (11593957562).

12012011110 is a wasteful number, since it uses less digits than its factorization.

12012011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86808.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12012011110 its reverse (1111021021), we get a palindrome (13123032131).

The spelling of 12012011110 in words is "twelve billion, twelve million, eleven thousand, one hundred ten".

Divisors: 1 2 5 10 11 22 55 110 1277 2554 6385 12770 14047 28094 70235 85513 140470 171026 427565 855130 940643 1881286 4703215 9406430 109200101 218400202 546000505 1092001010 1201201111 2402402222 6006005555 12012011110