1222400203 has 2 divisors, whose sum is σ = 1222400204. Its totient is φ = 1222400202.

The previous prime is 1222400183. The next prime is 1222400209. The reversal of 1222400203 is 3020042221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222400203 - 2⁵ = 1222400171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222400209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611200101 + 611200102.

It is an arithmetic number, because the mean of its divisors is an integer number (611200102).

Almost surely, 2^1222400203 is an apocalyptic number.

1222400203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222400203 is an equidigital number, since it uses as much as digits as its factorization.

1222400203 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1222400203 is about 34962.8403165418. The cubic root of 1222400203 is about 1069.2300056119.

Adding to 1222400203 its reverse (3020042221), we get a palindrome (4242442424).

The spelling of 1222400203 in words is "one billion, two hundred twenty-two million, four hundred thousand, two hundred three".