1321232212 has 6 divisors (see below), whose sum is σ = 2312156378. Its totient is φ = 660616104.

The previous prime is 1321232201. The next prime is 1321232239. The reversal of 1321232212 is 2122321231.

It can be written as a sum of positive squares in only one way, i.e., 826792516 + 494439696 = 28754^2 + 22236^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1321232212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165154023 + ... + 165154030.

Almost surely, 2^1321232212 is an apocalyptic number.

It is an amenable number.

1321232212 is a deficient number, since it is larger than the sum of its proper divisors (990924166).

1321232212 is a wasteful number, since it uses less digits than its factorization.

1321232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330308057 (or 330308055 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1321232212 is about 36348.7580530615. The cubic root of 1321232212 is about 1097.3025399084.

Adding to 1321232212 its reverse (2122321231), we get a palindrome (3443553443).

The spelling of 1321232212 in words is "one billion, three hundred twenty-one million, two hundred thirty-two thousand, two hundred twelve".