1223112021322 has 4 divisors (see below), whose sum is σ = 1834668031986. Its totient is φ = 611556010660.

The previous prime is 1223112021319. The next prime is 1223112021331. The reversal of 1223112021322 is 2231202113221.

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

It can be written as a sum of positive squares in only one way, i.e., 758221236081 + 464890785241 = 870759^2 + 681829^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1223112021293 and 1223112021302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305778005329 + ... + 305778005332.

Almost surely, 2^{1223112021322} is an apocalyptic number.

1223112021322 is a deficient number, since it is larger than the sum of its proper divisors (611556010664).

1223112021322 is an equidigital number, since it uses as much as digits as its factorization.

1223112021322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611556010663.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1223112021322 its reverse (2231202113221), we get a palindrome (3454314134543).

The spelling of 1223112021322 in words is "one trillion, two hundred twenty-three billion, one hundred twelve million, twenty-one thousand, three hundred twenty-two".