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12211351441 = 113108065057
BaseRepresentation
bin10110101111101101…
…00110111110010001
31011112000210221000121
423113312212332101
5200002101221231
65335415350241
7611415526462
oct132766467621
934460727017
1012211351441
1151a6a98093
122449682381
1311c7b94853
1483bb16d69
154b70bd311
hex2d7da6f91

12211351441 has 4 divisors (see below), whose sum is σ = 12319416612. Its totient is φ = 12103286272.

The previous prime is 12211351417. The next prime is 12211351457. The reversal of 12211351441 is 14415311221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2917620225 + 9293731216 = 54015^2 + 96404^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211351441 - 25 = 12211351409 is a prime.

It is a super-2 number, since 2×122113514412 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211351541) 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, 54032416 + ... + 54032641.

It is an arithmetic number, because the mean of its divisors is an integer number (3079854153).

Almost surely, 212211351441 is an apocalyptic number.

It is an amenable number.

12211351441 is a deficient number, since it is larger than the sum of its proper divisors (108065171).

12211351441 is a wasteful number, since it uses less digits than its factorization.

12211351441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108065170.

The product of its digits is 960, while the sum is 25.

Adding to 12211351441 its reverse (14415311221), we get a palindrome (26626662662).

The spelling of 12211351441 in words is "twelve billion, two hundred eleven million, three hundred fifty-one thousand, four hundred forty-one".

Divisors: 1 113 108065057 12211351441