1322121204 has 36 divisors (see below), whose sum is σ = 3465809984. Its totient is φ = 440706744.

The previous prime is 1322121179. The next prime is 1322121239. The reversal of 1322121204 is 4021212231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 679132 + ... + 681075.

Almost surely, 2^1322121204 is an apocalyptic number.

It is an amenable number.

1322121204 is an abundant number, since it is smaller than the sum of its proper divisors (2143688780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1322121204 is a wasteful number, since it uses less digits than its factorization.

1322121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360226 (or 1360212 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1322121204 is about 36360.9846401332. The cubic root of 1322121204 is about 1097.5485916534.

Adding to 1322121204 its reverse (4021212231), we get a palindrome (5343333435).

The spelling of 1322121204 in words is "one billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred four".