1220200243 has 2 divisors, whose sum is σ = 1220200244. Its totient is φ = 1220200242.

The previous prime is 1220200231. The next prime is 1220200297. The reversal of 1220200243 is 3420020221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220200243 - 2⁹ = 1220199731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220200543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610100121 + 610100122.

It is an arithmetic number, because the mean of its divisors is an integer number (610100122).

Almost surely, 2^1220200243 is an apocalyptic number.

1220200243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220200243 is an equidigital number, since it uses as much as digits as its factorization.

1220200243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1220200243 is about 34931.3647457410. The cubic root of 1220200243 is about 1068.5881874968.

Adding to 1220200243 its reverse (3420020221), we get a palindrome (4640220464).

The spelling of 1220200243 in words is "one billion, two hundred twenty million, two hundred thousand, two hundred forty-three".