1321221124 has 12 divisors (see below), whose sum is σ = 2312561664. Its totient is φ = 660489224.

The previous prime is 1321221119. The next prime is 1321221137. The reversal of 1321221124 is 4211221231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3124 + ... + 51499.

It is an arithmetic number, because the mean of its divisors is an integer number (192713472).

Almost surely, 2^1321221124 is an apocalyptic number.

It is an amenable number.

1321221124 is a deficient number, since it is larger than the sum of its proper divisors (991340540).

1321221124 is a wasteful number, since it uses less digits than its factorization.

1321221124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60674 (or 60672 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1321221124 is about 36348.6055303364. The cubic root of 1321221124 is about 1097.2994703181.

Adding to 1321221124 its reverse (4211221231), we get a palindrome (5532442355).

The spelling of 1321221124 in words is "one billion, three hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-four".