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12121122110 = 2510112001111
BaseRepresentation
bin10110100100111100…
…11010010100111110
31011021202000210122112
423102132122110332
5144311001401420
65322433414022
7606241560266
oct132236322476
934252023575
1012121122110
11516006a499
12242340a312
1311b2292406
1482db4a7a6
154ae1e88c5
hex2d279a53e

12121122110 has 16 divisors (see below), whose sum is σ = 22034041632. Its totient is φ = 4800444000.

The previous prime is 12121122103. The next prime is 12121122119. The reversal of 12121122110 is 1122112121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121122119) 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, 5999546 + ... + 6001565.

It is an arithmetic number, because the mean of its divisors is an integer number (1377127602).

Almost surely, 212121122110 is an apocalyptic number.

12121122110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121122110 is a deficient number, since it is larger than the sum of its proper divisors (9912919522).

12121122110 is a wasteful number, since it uses less digits than its factorization.

12121122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12001219.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12121122110 its reverse (1122112121), we get a palindrome (13243234231).

The spelling of 12121122110 in words is "twelve billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred ten".

Divisors: 1 2 5 10 101 202 505 1010 12001111 24002222 60005555 120011110 1212112211 2424224422 6060561055 12121122110