1220120204 has 6 divisors (see below), whose sum is σ = 2135210364. Its totient is φ = 610060100.

The previous prime is 1220120201. The next prime is 1220120221. The reversal of 1220120204 is 4020210221.

It is not an unprimeable number, because it can be changed into a prime (1220120201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152515022 + ... + 152515029.

It is an arithmetic number, because the mean of its divisors is an integer number (355868394).

Almost surely, 2^1220120204 is an apocalyptic number.

It is an amenable number.

1220120204 is a deficient number, since it is larger than the sum of its proper divisors (915090160).

1220120204 is a wasteful number, since it uses less digits than its factorization.

1220120204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305030055 (or 305030053 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220120204 is about 34930.2190660179. The cubic root of 1220120204 is about 1068.5648223154.

Adding to 1220120204 its reverse (4020210221), we get a palindrome (5240330425).

The spelling of 1220120204 in words is "one billion, two hundred twenty million, one hundred twenty thousand, two hundred four".