1220116204 has 12 divisors (see below), whose sum is σ = 2135753928. Its totient is φ = 609900800.

The previous prime is 1220116201. The next prime is 1220116207. The reversal of 1220116204 is 4026110221.

It is an interprime number because it is at equal distance from previous prime (1220116201) and next prime (1220116207).

It is not an unprimeable number, because it can be changed into a prime (1220116201) 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, 20917 + ... + 53644.

It is an arithmetic number, because the mean of its divisors is an integer number (177979494).

Almost surely, 2^1220116204 is an apocalyptic number.

It is an amenable number.

1220116204 is a deficient number, since it is larger than the sum of its proper divisors (915637724).

1220116204 is a wasteful number, since it uses less digits than its factorization.

1220116204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78656 (or 78654 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1220116204 is about 34930.1618089582. The cubic root of 1220116204 is about 1068.5636545988.

Adding to 1220116204 its reverse (4026110221), we get a palindrome (5246226425).

The spelling of 1220116204 in words is "one billion, two hundred twenty million, one hundred sixteen thousand, two hundred four".