1102743378221 has 2 divisors, whose sum is σ = 1102743378222. Its totient is φ = 1102743378220.

The previous prime is 1102743378193. The next prime is 1102743378241. The reversal of 1102743378221 is 1228733472011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 811105576996 + 291637801225 = 900614^2 + 540035^2 .

It is an emirp because it is prime and its reverse (1228733472011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1102743378221 - 2⁶ = 1102743378157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102743378241) 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, 551371689110 + 551371689111.

It is an arithmetic number, because the mean of its divisors is an integer number (551371689111).

Almost surely, 2^{1102743378221} is an apocalyptic number.

It is an amenable number.

1102743378221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102743378221 is an equidigital number, since it uses as much as digits as its factorization.

1102743378221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 1102743378221 in words is "one trillion, one hundred two billion, seven hundred forty-three million, three hundred seventy-eight thousand, two hundred twenty-one".