1213021322 has 8 divisors (see below), whose sum is σ = 1820107236. Its totient is φ = 606318912.

The previous prime is 1213021321. The next prime is 1213021339. The reversal of 1213021322 is 2231203121.

It can be written as a sum of positive squares in 2 ways, for example, as 1030474201 + 182547121 = 32101^2 + 13511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1213021322.

It is not an unprimeable number, because it can be changed into a prime (1213021321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87833 + ... + 100700.

Almost surely, 2^1213021322 is an apocalyptic number.

1213021322 is a deficient number, since it is larger than the sum of its proper divisors (607085914).

1213021322 is a wasteful number, since it uses less digits than its factorization.

1213021322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191752.

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

The square root of 1213021322 is about 34828.4556361605. The cubic root of 1213021322 is about 1066.4884217569.

Adding to 1213021322 its reverse (2231203121), we get a palindrome (3444224443).

The spelling of 1213021322 in words is "one billion, two hundred thirteen million, twenty-one thousand, three hundred twenty-two".