1212101111219 has 2 divisors, whose sum is σ = 1212101111220. Its totient is φ = 1212101111218.

The previous prime is 1212101111209. The next prime is 1212101111233. The reversal of 1212101111219 is 9121111012121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212101111219 is a prime.

It is a super-2 number, since 2×1212101111219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212101111194 and 1212101111203.

It is not a weakly prime, because it can be changed into another prime (1212101111209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050555609 + 606050555610.

It is an arithmetic number, because the mean of its divisors is an integer number (606050555610).

Almost surely, 2^{1212101111219} is an apocalyptic number.

1212101111219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101111219 is an equidigital number, since it uses as much as digits as its factorization.

1212101111219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 1212101111219 in words is "one trillion, two hundred twelve billion, one hundred one million, one hundred eleven thousand, two hundred nineteen".