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12102400211 = 117115496031
BaseRepresentation
bin10110100010101101…
…11111100011010011
31011020102210122000212
423101112333203103
5144241203301321
65320524234335
7605623463426
oct132126774323
934212718025
1012102400211
115150542450
12241909b9ab
1311ab438975
1482b4759bd
154ac74b55b
hex2d15bf8d3

12102400211 has 8 divisors (see below), whose sum is σ = 13388571648. Its totient is φ = 10847221000.

The previous prime is 12102400159. The next prime is 12102400223. The reversal of 12102400211 is 11200420121.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-12102400211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102400511) 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, 7747235 + ... + 7748796.

It is an arithmetic number, because the mean of its divisors is an integer number (1673571456).

Almost surely, 212102400211 is an apocalyptic number.

12102400211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12102400211 is a deficient number, since it is larger than the sum of its proper divisors (1286171437).

12102400211 is a wasteful number, since it uses less digits than its factorization.

12102400211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15496113.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12102400211 its reverse (11200420121), we get a palindrome (23302820332).

The spelling of 12102400211 in words is "twelve billion, one hundred two million, four hundred thousand, two hundred eleven".

Divisors: 1 11 71 781 15496031 170456341 1100218201 12102400211