1328621212 has 24 divisors (see below), whose sum is σ = 2341769472. Its totient is φ = 659558400.

The previous prime is 1328621207. The next prime is 1328621233. The reversal of 1328621212 is 2121268231.

It is a congruent number.

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, 488368 + ... + 491080.

It is an arithmetic number, because the mean of its divisors is an integer number (97573728).

Almost surely, 2^1328621212 is an apocalyptic number.

It is an amenable number.

1328621212 is a deficient number, since it is larger than the sum of its proper divisors (1013148260).

1328621212 is a wasteful number, since it uses less digits than its factorization.

1328621212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549 (or 3547 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 1328621212 is about 36450.2566794803. The cubic root of 1328621212 is about 1099.3442957171.

Adding to 1328621212 its reverse (2121268231), we get a palindrome (3449889443).

The spelling of 1328621212 in words is "one billion, three hundred twenty-eight million, six hundred twenty-one thousand, two hundred twelve".