1220000233321 has 16 divisors (see below), whose sum is σ = 1245269869200. Its totient is φ = 1195047383040.

The previous prime is 1220000233301. The next prime is 1220000233349. The reversal of 1220000233321 is 1233320000221.

It can be written as a sum of positive squares in 8 ways, for example, as 311430963600 + 908569269721 = 558060^2 + 953189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220000233321 - 2²¹ = 1219998136169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220000233301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3911095 + ... + 4211491.

It is an arithmetic number, because the mean of its divisors is an integer number (77829366825).

Almost surely, 2^{1220000233321} is an apocalyptic number.

It is an amenable number.

1220000233321 is a deficient number, since it is larger than the sum of its proper divisors (25269635879).

1220000233321 is a wasteful number, since it uses less digits than its factorization.

1220000233321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300924.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 1220000233321 its reverse (1233320000221), we get a palindrome (2453320233542).

The spelling of 1220000233321 in words is "one trillion, two hundred twenty billion, two hundred thirty-three thousand, three hundred twenty-one".