1221034143019 has 2 divisors, whose sum is σ = 1221034143020. Its totient is φ = 1221034143018.

The previous prime is 1221034143011. The next prime is 1221034143037. The reversal of 1221034143019 is 9103414301221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221034143019 - 2³ = 1221034143011 is a prime.

It is a super-2 number, since 2×1221034143019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221034143011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610517071509 + 610517071510.

It is an arithmetic number, because the mean of its divisors is an integer number (610517071510).

Almost surely, 2^{1221034143019} is an apocalyptic number.

1221034143019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221034143019 is an equidigital number, since it uses as much as digits as its factorization.

1221034143019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 1221034143019 in words is "one trillion, two hundred twenty-one billion, thirty-four million, one hundred forty-three thousand, nineteen".