1222019543 has 2 divisors, whose sum is σ = 1222019544. Its totient is φ = 1222019542.

The previous prime is 1222019507. The next prime is 1222019593. The reversal of 1222019543 is 3459102221.

It is a weak prime.

It is an emirp because it is prime and its reverse (3459102221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222019543 - 2¹² = 1222015447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222019593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611009771 + 611009772.

It is an arithmetic number, because the mean of its divisors is an integer number (611009772).

Almost surely, 2^1222019543 is an apocalyptic number.

1222019543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222019543 is an equidigital number, since it uses as much as digits as its factorization.

1222019543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1222019543 is about 34957.3961129830. The cubic root of 1222019543 is about 1069.1190066803.

The spelling of 1222019543 in words is "one billion, two hundred twenty-two million, nineteen thousand, five hundred forty-three".