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12311101211 is a prime number
BaseRepresentation
bin10110111011100110…
…00111111100011011
31011202222111201222112
423131303013330123
5200203120214321
65353341342535
7614036430233
oct133563077433
934688451875
1012311101211
115248328612
122476b67a4b
13121274b496
1484b080cc3
154c0c23a5b
hex2ddcc7f1b

12311101211 has 2 divisors, whose sum is σ = 12311101212. Its totient is φ = 12311101210.

The previous prime is 12311101183. The next prime is 12311101213. The reversal of 12311101211 is 11210111321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12311101211 - 210 = 12311100187 is a prime.

Together with 12311101213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12311101213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155550605 + 6155550606.

It is an arithmetic number, because the mean of its divisors is an integer number (6155550606).

Almost surely, 212311101211 is an apocalyptic number.

12311101211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311101211 is an equidigital number, since it uses as much as digits as its factorization.

12311101211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12311101211 its reverse (11210111321), we get a palindrome (23521212532).

It can be divided in two parts, 1231110 and 1211, that added together give a palindrome (1232321).

The spelling of 12311101211 in words is "twelve billion, three hundred eleven million, one hundred one thousand, two hundred eleven".