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12110231144 = 2311137616263
BaseRepresentation
bin10110100011101001…
…10111011001101000
31011020222112111001102
423101310313121220
5144300204344034
65321404140532
7606050160224
oct132164673150
934228474042
1012110231144
115154a009a0
12241b837748
1311acc4b15b
1482c513784
154ad29697e
hex2d1d37668

12110231144 has 16 divisors (see below), whose sum is σ = 24770927520. Its totient is φ = 5504650480.

The previous prime is 12110231141. The next prime is 12110231207. The reversal of 12110231144 is 44113201121.

It is a super-2 number, since 2×121102311442 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12110231141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68808044 + ... + 68808219.

It is an arithmetic number, because the mean of its divisors is an integer number (1548182970).

Almost surely, 212110231144 is an apocalyptic number.

It is an amenable number.

12110231144 is an abundant number, since it is smaller than the sum of its proper divisors (12660696376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12110231144 is a wasteful number, since it uses less digits than its factorization.

12110231144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137616280 (or 137616276 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12110231144 its reverse (44113201121), we get a palindrome (56223432265).

The spelling of 12110231144 in words is "twelve billion, one hundred ten million, two hundred thirty-one thousand, one hundred forty-four".

Divisors: 1 2 4 8 11 22 44 88 137616263 275232526 550465052 1100930104 1513778893 3027557786 6055115572 12110231144