1222120130321 has 4 divisors (see below), whose sum is σ = 1222123367652. Its totient is φ = 1222116892992.

The previous prime is 1222120130269. The next prime is 1222120130351. The reversal of 1222120130321 is 1230310212221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 395722774225 + 826397356096 = 629065^2 + 909064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222120130321 - 2¹⁰ = 1222120129297 is a prime.

It is a super-2 number, since 2×1222120130321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222120130293 and 1222120130302.

It is not an unprimeable number, because it can be changed into a prime (1222120130351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964196 + ... + 1836821.

It is an arithmetic number, because the mean of its divisors is an integer number (305530841913).

Almost surely, 2^{1222120130321} is an apocalyptic number.

It is an amenable number.

1222120130321 is a deficient number, since it is larger than the sum of its proper divisors (3237331).

1222120130321 is an equidigital number, since it uses as much as digits as its factorization.

1222120130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237330.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1222120130321 its reverse (1230310212221), we get a palindrome (2452430342542).

The spelling of 1222120130321 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, one hundred thirty thousand, three hundred twenty-one".