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12102320989 = 114332540903
BaseRepresentation
bin10110100010101101…
…01100001101011101
31011020102122121100201
423101112230031131
5144241143232424
65320522423501
7605623013443
oct132126541535
934212577321
1012102320989
115150498980
122419061b91
1311ab40b8a5
1482b454b93
154ac732d44
hex2d15ac35d

12102320989 has 8 divisors (see below), whose sum is σ = 13233028032. Its totient is φ = 10976696640.

The previous prime is 12102320969. The next prime is 12102321013. The reversal of 12102320989 is 98902320121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12102320989 - 25 = 12102320957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102320929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1265689 + ... + 1275214.

It is an arithmetic number, because the mean of its divisors is an integer number (1654128504).

Almost surely, 212102320989 is an apocalyptic number.

It is an amenable number.

12102320989 is a deficient number, since it is larger than the sum of its proper divisors (1130707043).

12102320989 is a wasteful number, since it uses less digits than its factorization.

12102320989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541347.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 12102320989 in words is "twelve billion, one hundred two million, three hundred twenty thousand, nine hundred eighty-nine".

Divisors: 1 11 433 4763 2540903 27949933 1100210999 12102320989