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12101210988 = 2236116531709
BaseRepresentation
bin10110100010100100…
…11101001101101100
31011020100120012201120
423101102131031230
5144240402222423
65320442540540
7605610411336
oct132122351554
934210505646
1012101210988
11514a8aaa19
122418807750
1311ab110599
1482b246456
154ac5b3ee3
hex2d149d36c

12101210988 has 24 divisors (see below), whose sum is σ = 28699048560. Its totient is φ = 3967609920.

The previous prime is 12101210987. The next prime is 12101211011. The reversal of 12101210988 is 88901210121.

12101210988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121012109882 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12101210987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8265123 + ... + 8266586.

It is an arithmetic number, because the mean of its divisors is an integer number (1195793690).

Almost surely, 212101210988 is an apocalyptic number.

It is an amenable number.

12101210988 is an abundant number, since it is smaller than the sum of its proper divisors (16597837572).

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

12101210988 is a wasteful number, since it uses less digits than its factorization.

12101210988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16531777 (or 16531775 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 33.

The spelling of 12101210988 in words is "twelve billion, one hundred one million, two hundred ten thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 61 122 183 244 366 732 16531709 33063418 49595127 66126836 99190254 198380508 1008434249 2016868498 3025302747 4033736996 6050605494 12101210988