1220222203 has 4 divisors (see below), whose sum is σ = 1229000920. Its totient is φ = 1211443488.

The previous prime is 1220222177. The next prime is 1220222219. The reversal of 1220222203 is 3022220221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3022220221 = 73 ⋅41400277.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220222203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220222273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4389150 + ... + 4389427.

It is an arithmetic number, because the mean of its divisors is an integer number (307250230).

Almost surely, 2^1220222203 is an apocalyptic number.

1220222203 is a deficient number, since it is larger than the sum of its proper divisors (8778717).

1220222203 is an equidigital number, since it uses as much as digits as its factorization.

1220222203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8778716.

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

The square root of 1220222203 is about 34931.6790750173. The cubic root of 1220222203 is about 1068.5945979353.

Adding to 1220222203 its reverse (3022220221), we get a palindrome (4242442424).

The spelling of 1220222203 in words is "one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred three".