1221410041219 has 2 divisors, whose sum is σ = 1221410041220. Its totient is φ = 1221410041218.

The previous prime is 1221410041193. The next prime is 1221410041253. The reversal of 1221410041219 is 9121400141221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221410041219 - 2³¹ = 1219262557571 is a prime.

It is a super-2 number, since 2×1221410041219² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221410041919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610705020609 + 610705020610.

It is an arithmetic number, because the mean of its divisors is an integer number (610705020610).

Almost surely, 2^{1221410041219} is an apocalyptic number.

1221410041219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221410041219 is an equidigital number, since it uses as much as digits as its factorization.

1221410041219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 1221410041219 in words is "one trillion, two hundred twenty-one billion, four hundred ten million, forty-one thousand, two hundred nineteen".