1321120204 has 24 divisors (see below), whose sum is σ = 2403718128. Its totient is φ = 634824960.

The previous prime is 1321120193. The next prime is 1321120219. The reversal of 1321120204 is 4020211231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49129 + ... + 71104.

It is an arithmetic number, because the mean of its divisors is an integer number (100154922).

Almost surely, 2^1321120204 is an apocalyptic number.

It is an amenable number.

1321120204 is a deficient number, since it is larger than the sum of its proper divisors (1082597924).

1321120204 is a wasteful number, since it uses less digits than its factorization.

1321120204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120345 (or 120343 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1321120204 is about 36347.2172800065. The cubic root of 1321120204 is about 1097.2715309419.

Adding to 1321120204 its reverse (4020211231), we get a palindrome (5341331435).

The spelling of 1321120204 in words is "one billion, three hundred twenty-one million, one hundred twenty thousand, two hundred four".