1220203222 has 16 divisors (see below), whose sum is σ = 2182724352. Its totient is φ = 500207400.

The previous prime is 1220203219. The next prime is 1220203223. The reversal of 1220203222 is 2223020221.

It is a junction number, because it is equal to n+sod(n) for n = 1220203196 and 1220203205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220203223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894404 + ... + 1895047.

It is an arithmetic number, because the mean of its divisors is an integer number (136420272).

Almost surely, 2^1220203222 is an apocalyptic number.

1220203222 is a deficient number, since it is larger than the sum of its proper divisors (962521130).

1220203222 is a wasteful number, since it uses less digits than its factorization.

1220203222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789483.

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

The square root of 1220203222 is about 34931.4073864767. The cubic root of 1220203222 is about 1068.5890571141.

Adding to 1220203222 its reverse (2223020221), we get a palindrome (3443223443).

The spelling of 1220203222 in words is "one billion, two hundred twenty million, two hundred three thousand, two hundred twenty-two".