1223340433221 has 4 divisors (see below), whose sum is σ = 1631120577632. Its totient is φ = 815560288812.

The previous prime is 1223340433219. The next prime is 1223340433283.

It is a happy number.

1223340433221 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1223340433221 - 2¹ = 1223340433219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223340431221) 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, 203890072201 + ... + 203890072206.

It is an arithmetic number, because the mean of its divisors is an integer number (407780144408).

Almost surely, 2^{1223340433221} is an apocalyptic number.

It is an amenable number.

1223340433221 is a deficient number, since it is larger than the sum of its proper divisors (407780144411).

1223340433221 is an equidigital number, since it uses as much as digits as its factorization.

1223340433221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407780144410.

The product of its (nonzero) digits is 20736, while the sum is 30.

It can be divided in two parts, 1223340 and 433221, that added together give a palindrome (1656561).

The spelling of 1223340433221 in words is "one trillion, two hundred twenty-three billion, three hundred forty million, four hundred thirty-three thousand, two hundred twenty-one".