1220312221330 has 16 divisors (see below), whose sum is σ = 2272305516120. Its totient is φ = 471292995712.

The previous prime is 1220312221309. The next prime is 1220312221333. The reversal of 1220312221330 is 331222130221.

It can be written as a sum of positive squares in 4 ways, for example, as 1038791062521 + 181521158809 = 1019211^2 + 426053^2 .

It is not an unprimeable number, because it can be changed into a prime (1220312221333) 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, 2103986299 + ... + 2103986878.

Almost surely, 2^{1220312221330} is an apocalyptic number.

1220312221330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220312221330 is a deficient number, since it is larger than the sum of its proper divisors (1051993294790).

1220312221330 is a wasteful number, since it uses less digits than its factorization.

1220312221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207973213.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1220312221330 its reverse (331222130221), we get a palindrome (1551534351551).

The spelling of 1220312221330 in words is "one trillion, two hundred twenty billion, three hundred twelve million, two hundred twenty-one thousand, three hundred thirty".