123121103219 has 2 divisors, whose sum is σ = 123121103220. Its totient is φ = 123121103218.

The previous prime is 123121103213. The next prime is 123121103233. The reversal of 123121103219 is 912301121321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123121103219 is a prime.

It is a super-3 number, since 3×123121103219³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (123121103213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560551609 + 61560551610.

It is an arithmetic number, because the mean of its divisors is an integer number (61560551610).

Almost surely, 2^123121103219 is an apocalyptic number.

123121103219 is a deficient number, since it is larger than the sum of its proper divisors (1).

123121103219 is an equidigital number, since it uses as much as digits as its factorization.

123121103219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 123121103219 in words is "one hundred twenty-three billion, one hundred twenty-one million, one hundred three thousand, two hundred nineteen".