1223883221 has 4 divisors (see below), whose sum is σ = 1335145344. Its totient is φ = 1112621100.

The previous prime is 1223883217. The next prime is 1223883253.

1223883221 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 a cyclic number.

It is not a de Polignac number, because 1223883221 - 2² = 1223883217 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 (1223883211) 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, 55631045 + ... + 55631066.

It is an arithmetic number, because the mean of its divisors is an integer number (333786336).

Almost surely, 2^1223883221 is an apocalyptic number.

1223883221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223883221 is a deficient number, since it is larger than the sum of its proper divisors (111262123).

1223883221 is a wasteful number, since it uses less digits than its factorization.

1223883221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111262122.

The product of its digits is 9216, while the sum is 32.

The square root of 1223883221 is about 34984.0423764893. The cubic root of 1223883221 is about 1069.6622280869.

It can be divided in two parts, 12238 and 83221, that added together give a palindrome (95459).

The spelling of 1223883221 in words is "one billion, two hundred twenty-three million, eight hundred eighty-three thousand, two hundred twenty-one".