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12121103 is a prime number
BaseRepresentation
bin101110001111…
…010000001111
3211210211000202
4232033100033
511100333403
61111444115
7205012331
oct56172017
924724022
1012121103
116929845
12408663b
132685167
141877451
1510e6688
hexb8f40f

12121103 has 2 divisors, whose sum is σ = 12121104. Its totient is φ = 12121102.

The previous prime is 12121099. The next prime is 12121121. The reversal of 12121103 is 30112121.

12121103 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12121103 - 22 = 12121099 is a prime.

It is a super-2 number, since 2×121211032 = 293842275873218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060551 + 6060552.

It is an arithmetic number, because the mean of its divisors is an integer number (6060552).

Almost surely, 212121103 is an apocalyptic number.

12121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121103 is an equidigital number, since it uses as much as digits as its factorization.

12121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 12121103 is about 3481.5374477377. The cubic root of 12121103 is about 229.7104295340.

Adding to 12121103 its reverse (30112121), we get a palindrome (42233224).

The spelling of 12121103 in words is "twelve million, one hundred twenty-one thousand, one hundred three".