1212321032 has 16 divisors (see below), whose sum is σ = 2447956140. Its totient is φ = 559532736.

The previous prime is 1212321013. The next prime is 1212321037. The reversal of 1212321032 is 2301232121.

It can be written as a sum of positive squares in 2 ways, for example, as 1191216196 + 21104836 = 34514^2 + 4594^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1212321032.

It is not an unprimeable number, because it can be changed into a prime (1212321037) 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, 5828363 + ... + 5828570.

Almost surely, 2^1212321032 is an apocalyptic number.

It is an amenable number.

1212321032 is an abundant number, since it is smaller than the sum of its proper divisors (1235635108).

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

1212321032 is a wasteful number, since it uses less digits than its factorization.

1212321032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656952 (or 11656948 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1212321032 is about 34818.4007674103. The cubic root of 1212321032 is about 1066.2831505796.

Adding to 1212321032 its reverse (2301232121), we get a palindrome (3513553153).

The spelling of 1212321032 in words is "one billion, two hundred twelve million, three hundred twenty-one thousand, thirty-two".