1213221020330 has 16 divisors (see below), whose sum is σ = 2382324912864. Its totient is φ = 441171280080.

The previous prime is 1213221020327. The next prime is 1213221020339. The reversal of 1213221020330 is 330201223121.

It is not an unprimeable number, because it can be changed into a prime (1213221020339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5514640892 + ... + 5514641111.

It is an arithmetic number, because the mean of its divisors is an integer number (148895307054).

Almost surely, 2^{1213221020330} is an apocalyptic number.

1213221020330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213221020330 is a deficient number, since it is larger than the sum of its proper divisors (1169103892534).

1213221020330 is a wasteful number, since it uses less digits than its factorization.

1213221020330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11029282021.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1213221020330 its reverse (330201223121), we get a palindrome (1543422243451).

The spelling of 1213221020330 in words is "one trillion, two hundred thirteen billion, two hundred twenty-one million, twenty thousand, three hundred thirty".