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12102110110 = 251771188883
BaseRepresentation
bin10110100010101011…
…11000101110011110
31011020102020220002101
423101111320232132
5144241120010420
65320514115314
7605621144566
oct132125705636
934212226071
1012102110110
1151503644a2
122418b7bb3a
1311ab3668cc
1482b3dbda6
154ac6e060a
hex2d1578b9e

12102110110 has 16 divisors (see below), whose sum is σ = 23065198416. Its totient is φ = 4556088448.

The previous prime is 12102110099. The next prime is 12102110117. The reversal of 12102110110 is 1101120121.

It is a super-2 number, since 2×121021101102 (a number of 21 digits) contains 22 as substring.

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 (12102110117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35594272 + ... + 35594611.

It is an arithmetic number, because the mean of its divisors is an integer number (1441574901).

Almost surely, 212102110110 is an apocalyptic number.

12102110110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12102110110 is a deficient number, since it is larger than the sum of its proper divisors (10963088306).

12102110110 is a wasteful number, since it uses less digits than its factorization.

12102110110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71188907.

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

Adding to 12102110110 its reverse (1101120121), we get a palindrome (13203230231).

It can be divided in two parts, 121021 and 10110, that added together give a palindrome (131131).

The spelling of 12102110110 in words is "twelve billion, one hundred two million, one hundred ten thousand, one hundred ten".

Divisors: 1 2 5 10 17 34 85 170 71188883 142377766 355944415 711888830 1210211011 2420422022 6051055055 12102110110