1321135522 has 16 divisors (see below), whose sum is σ = 2268256320. Its totient is φ = 565337808.

The previous prime is 1321135507. The next prime is 1321135523. The reversal of 1321135522 is 2255311231.

It is not an unprimeable number, because it can be changed into a prime (1321135523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62373 + ... + 80824.

It is an arithmetic number, because the mean of its divisors is an integer number (141766020).

Almost surely, 2^1321135522 is an apocalyptic number.

1321135522 is a deficient number, since it is larger than the sum of its proper divisors (947120798).

1321135522 is a wasteful number, since it uses less digits than its factorization.

1321135522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143865.

The product of its digits is 1800, while the sum is 25.

The square root of 1321135522 is about 36347.4279970399. The cubic root of 1321135522 is about 1097.2757717723.

Adding to 1321135522 its reverse (2255311231), we get a palindrome (3576446753).

The spelling of 1321135522 in words is "one billion, three hundred twenty-one million, one hundred thirty-five thousand, five hundred twenty-two".