1223441021 has 8 divisors (see below), whose sum is σ = 1339740864. Its totient is φ = 1107987520.

The previous prime is 1223441003. The next prime is 1223441059. The reversal of 1223441021 is 1201443221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223441021 - 2⁶ = 1223440957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223440984 and 1223441002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223441221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208556 + ... + 214341.

It is an arithmetic number, because the mean of its divisors is an integer number (167467608).

Almost surely, 2^1223441021 is an apocalyptic number.

1223441021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223441021 is a deficient number, since it is larger than the sum of its proper divisors (116299843).

1223441021 is a wasteful number, since it uses less digits than its factorization.

1223441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423171.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1223441021 is about 34977.7217811566. The cubic root of 1223441021 is about 1069.5333863784.

Adding to 1223441021 its reverse (1201443221), we get a palindrome (2424884242).

It can be divided in two parts, 1223 and 441021, that added together give a palindrome (442244).

The spelling of 1223441021 in words is "one billion, two hundred twenty-three million, four hundred forty-one thousand, twenty-one".