1211214403219 has 2 divisors, whose sum is σ = 1211214403220. Its totient is φ = 1211214403218.

The previous prime is 1211214403213. The next prime is 1211214403319. The reversal of 1211214403219 is 9123044121121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211214403219 - 2¹¹ = 1211214401171 is a prime.

It is a super-2 number, since 2×1211214403219² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1211214403213) 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, 605607201609 + 605607201610.

It is an arithmetic number, because the mean of its divisors is an integer number (605607201610).

Almost surely, 2^{1211214403219} is an apocalyptic number.

1211214403219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211214403219 is an equidigital number, since it uses as much as digits as its factorization.

1211214403219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 1211214403219 in words is "one trillion, two hundred eleven billion, two hundred fourteen million, four hundred three thousand, two hundred nineteen".