1201311221219 has 2 divisors, whose sum is σ = 1201311221220. Its totient is φ = 1201311221218.

The previous prime is 1201311221107. The next prime is 1201311221237. The reversal of 1201311221219 is 9121221131021.

It is a strong prime.

It is an emirp because it is prime and its reverse (9121221131021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201311221219 - 2¹² = 1201311217123 is a prime.

It is a super-2 number, since 2×1201311221219² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201311221819) 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, 600655610609 + 600655610610.

It is an arithmetic number, because the mean of its divisors is an integer number (600655610610).

Almost surely, 2^{1201311221219} is an apocalyptic number.

1201311221219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201311221219 is an equidigital number, since it uses as much as digits as its factorization.

1201311221219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 1201311221219 in words is "one trillion, two hundred one billion, three hundred eleven million, two hundred twenty-one thousand, two hundred nineteen".