1223322033221 has 4 divisors (see below), whose sum is σ = 1243376492844. Its totient is φ = 1203267573600.

The previous prime is 1223322033151. The next prime is 1223322033253. The reversal of 1223322033221 is 1223302233221.

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 103481882596 + 1119840150625 = 321686^2 + 1058225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223322033221 is a prime.

It is a super-2 number, since 2×1223322033221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223322032221) 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, 10027229720 + ... + 10027229841.

It is an arithmetic number, because the mean of its divisors is an integer number (310844123211).

Almost surely, 2^{1223322033221} is an apocalyptic number.

It is an amenable number.

1223322033221 is a deficient number, since it is larger than the sum of its proper divisors (20054459623).

1223322033221 is an equidigital number, since it uses as much as digits as its factorization.

1223322033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20054459622.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 1223322033221 its reverse (1223302233221), we get a palindrome (2446624266442).

The spelling of 1223322033221 in words is "one trillion, two hundred twenty-three billion, three hundred twenty-two million, thirty-three thousand, two hundred twenty-one".